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Table of Contents

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 10-Q
☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 2026
OR
☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
Commission File Number 001-36541
LIMBACH HOLDINGS, INC.
(Exact name of registrant as specified in its charter)

Delaware, USA |  | 46-5399422
(State or other jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification No.)
5102 W Laurel Street, Suite 700 Tampa, Florida |  | 33607
(Address of principal executive offices) |  | (Zip Code)

1-412-359-2100
(Registrant’s telephone number, including area code)
Not Applicable
(Former name, former address and former fiscal year, if changed since last report)
Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class |  | Trading Symbol(s) |  | Name of Each Exchange on Which Registered
Common Stock, par value $0.0001 per share |  | LMB |  | The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer | ☒ |  | Accelerated filer | ☐
Non-accelerated filer | ☐ |  | Smaller reporting company | ☐
|  |  | Emerging growth company | ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒
As of August 3, 2026, there were 11,924,993 shares of the registrant’s common stock, $0.0001 par value per share, outstanding.

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LIMBACH HOLDINGS, INC.
TABLE OF CONTENTS

Part I. |  |
Item 1. | Financial Statements (Unaudited) | 1
| Condensed Consolidated Balance Sheets as of June 30, 2026 and December 31, 2025 | 1
| Condensed Consolidated Statements of Operations for the Three and Six Months Ended June 30, 2026 and 2025 | 2
| Condensed Consolidated Statement of Stockholders’ Equity for the Three and Six Months Ended June 30, 2026 and 2025 | 3
| Condensed Consolidated Statements of Cash Flows for the Six Months Ended June 30, 2026 and 2025 | 4
| Notes to Condensed Consolidated Financial Statements | 5
Item 2. | Management’s Discussion and Analysis of Financial Condition and Results of Operations | 25
Item 3. | Quantitative and Qualitative Disclosures About Market Risk | 41
Item 4. | Controls and Procedures | 42
Part II. |  |
Item 1. | Legal Proceedings | 43
Item 1A. | Risk Factors | 43
Item 2. | Unregistered Sales of Equity Securities and Use of Proceeds | 43
Item 3. | Defaults Upon Senior Securities | 43
Item 4. | Mine Safety Disclosures | 43
Item 5. | Other Information | 43
Item 6. | Exhibits | 44
Signature |  | 45

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CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS
This Quarterly Report on Form 10-Q, including all documents incorporated by reference, contains forward-looking statements regarding Limbach Holdings, Inc. (the “Company,” “Limbach” “we” or “our”) and represents our expectations and beliefs concerning future events. These forward-looking statements are intended to be covered by the safe harbor for forward-looking statements provided by the Private Securities Litigation Reform Act of 1995. Forward-looking statements involve known and unknown risks and uncertainties. The forward-looking statements included herein or incorporated herein by reference include or may include, but are not limited to, (and you should read carefully) statements that are predictive in nature, depend upon or refer to future events or conditions, or use or contain words, terms, phrases, or expressions such as “achieve,” “forecast,”, “plan,” “propose,” “strategy,” “envision,” “hope,” “will,” “continue,” “potential,” “expect,” “believe,” “anticipate,” “project,” “estimate,” “predict,” “intend,” “should,” “could,” “may,” “might,” or similar words, terms, phrases or expressions or the negative of any of these terms. Any statements in this Quarterly Report on Form 10-Q that are not based upon historical facts are forward-looking statements and represent our best judgment as to what may occur in the future.
These forward-looking statements are based on information available as of the date of this Quarterly Report on Form 10-Q and the Company management’s current expectations, forecasts and assumptions, and involve a number of judgments, known and unknown risks and uncertainties and other factors, many of which are outside the control of the Company and its directors, officers and affiliates. Accordingly, forward-looking statements should not be relied upon as representing the Company’s views as of any subsequent date. The Company does not undertake any obligations to update, add or to otherwise correct any forward-looking statements contained herein to reflect events or circumstances after the date they were made, whether as a result of new information, future events, inaccuracies that become apparent after the date hereof or otherwise, except as may be required under applicable securities laws.
As a result of a number of known and unknown risks and uncertainties, the Company’s results or performance may be materially different from those expressed or implied by these forward-looking statements. Some factors that could cause actual results to differ include: (i) intense competition in our industry; (ii) ineffective management of the size and cost of our operations; (iii) our dependence on a limited number of customers; (iv) unexpected adjustments to our backlog or cancellations of orders in our backlog; (v) cost of overruns under our contracts; (vi) timing of the award and performance of new contracts; (vii) significant costs in excess of the original project scope and contract amount without having an approved change order; (viii) our failure to adequately recover on claims brought by us against contractors, project owners or other project participants for additional contract costs; (ix) risks associated with placing significant decision making powers with our subsidiaries' management; (x) acquisitions, divestitures, and other strategic transactions could fail to achieve financial or strategic objectives, disrupt our ongoing business, and adversely impact our results of operations; (xi) design errors and omissions in connection with Design/Build and Design/Assist contracts; (xii) delays and/or defaults in customer payments; (xiii) unsatisfactory safety performance; (xiv) labor disputes with unions representing our employees; (xv) strikes or work stoppages; (xvi) misconduct by our employees, subcontractors or partners, or our overall failure to comply with laws or regulations; (xvii) our dependence on subcontracts and suppliers of equipment and materials; (xviii) price increases in materials; (xix) changes in energy prices; (xx) our inability to identify and contract with qualified Disadvantaged Business Enterprise (“DBE”) contractors to perform as subcontractors; (xxi) reputational harm arising from our participation in construction joint ventures; (xxii) any difficulties in the financial and surety markets; (xxiii) our inability to obtain necessary insurance due to difficulties in the insurance markets; (xxiv) our use of the cost-to-cost method of accounting could result in a reduction or reversal of previously recorded revenue or profits; (xxv) impairment charges for goodwill and intangible assets; (xxvi) unexpected expenses arising from contractual warranty obligations; (xxvii) increased costs or limited supplies of raw materials and products used in our operations arising from recent and potential changes in U.S. trade policies and retaliatory responses from other countries; (xxviii) rising inflation and/or interest rates, or deterioration of the United States economy and conflicts around the world; (xxix) increased debt service obligations due to our variable rate indebtedness; (xxx) failure to remain in compliance with covenants under our debt and credit agreements or service our indebtedness; (xxxi) our inability to generate sufficient cash flow to meet all of our existing or potential future debt service obligations; (xxxii) significant expenses and liabilities arising under our obligation to contribute to multiemployer pension plans; (xxxiii) a pandemic, epidemic or outbreak of an infectious disease in the markets in which we operate or that otherwise impacts our facilities or suppliers; (xxxiv) future climate change; (xxxv) market or regulatory responses to climate change; (xxxvi) increasing scrutiny and changing expectations from investors and customers with respect to our environmental, social and governance practices; (xxxvii) adverse weather conditions, which may harm our business and financial results; (xxxviii) information technology system failures, network disruptions or cyber security breaches, events or attacks; (xxxix) changes to our outsourced software or infrastructure vendors as well as any sudden loss, breach of security, disruption or unexpected data or vendor loss associated with our information technology systems; (xl) changes in laws, regulations or requirements, or a material failure of any of our subsidiaries or us to comply with any of them; (xli) becoming barred from future government contracts due to violations of the applicable rules and regulations; (xlii) costs associated with compliance with environmental, safety and health regulations; (xliii) our failure to comply with immigration laws and labor

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regulations; and (xliv) those factors described under Part I, Item 1A “Risk Factors” of the Company’s most recent Annual Report on Form 10-K.

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PART I. FINANCIAL INFORMATION
Item 1. Financial Statements
LIMBACH HOLDINGS, INC.
Condensed Consolidated Balance Sheets (Unaudited)

(in thousands, except share and per share data) | June 30, 2026 |  | December 31, 2025
ASSETS |  |  |
Current assets: |  |  |
Cash and cash equivalents | $ | 17,529 |  |  | $ | 11,345 |
Restricted cash | 65 |  |  | 65 |
Accounts receivable (net of allowance for credit losses of $462 and $396, respectively) | 149,328 |  |  | 133,205 |
Contract assets, net | 41,587 |  |  | 45,467 |
Income tax receivable | 2,201 |  |  | — |
Other current assets | 12,438 |  |  | 4,967 |
Total current assets | 223,148 |  |  | 195,049 |
Property and equipment, net | 39,166 |  |  | 43,309 |
Intangible assets, net | 45,776 |  |  | 49,187 |
Goodwill | 72,644 |  |  | 70,600 |
Operating lease right-of-use assets | 18,220 |  |  | 19,792 |
Deferred tax asset | 4,739 |  |  | 2,917 |
Other assets | 314 |  |  | 276 |
Total assets | $ | 404,007 |  |  | $ | 381,130 |
LIABILITIES |  |  |
Current liabilities: |  |  |
Current portion of long-term debt | $ | 4,862 |  |  | $ | 5,031 |
Current operating lease liabilities | 4,592 |  |  | 4,379 |
Accounts payable, including retainage | 80,333 |  |  | 74,172 |
Contract liabilities, net | 35,127 |  |  | 20,936 |
Accrued income taxes | — |  |  | 1,152 |
Accrued expenses and other current liabilities | 25,332 |  |  | 29,416 |
Total current liabilities | 150,246 |  |  | 135,086 |
Long-term debt | 35,842 |  |  | 30,536 |
Long-term operating lease liabilities | 14,290 |  |  | 15,925 |
Other long-term liabilities | 481 |  |  | 3,922 |
Total liabilities | 200,859 |  |  | 185,469 |
Commitments and contingencies (Note 13) |  |  |
STOCKHOLDERS’ EQUITY |  |  |
Common stock, $0.0001 par value; 100,000,000 shares authorized, issued 12,100,719 and 11,806,466, respectively, and 11,921,067 and 11,626,814 outstanding, respectively | 1 |  |  | 1 |
Additional paid-in capital | 95,695 |  |  | 97,335 |
Treasury stock, at cost (179,652 shares at both period ends) | (2,000) |  |  | (2,000) |
Retained earnings | 109,452 |  |  | 100,325 |
Total stockholders’ equity | 203,148 |  |  | 195,661 |
Total liabilities and stockholders’ equity | $ | 404,007 |  |  | $ | 381,130 |

The accompanying notes are an integral part of these condensed consolidated financial statements.
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LIMBACH HOLDINGS, INC.
Condensed Consolidated Statements of Operations (Unaudited)

|  | Three Months Ended June 30, |  | Six Months Ended June 30,
(in thousands, except share and per share data) |  | 2026 |  | 2025 |  | 2026 |  | 2025
Revenue |  | $ | 173,457 |  |  | $ | 142,241 |  |  | $ | 312,316 |  |  | $ | 275,349 |
Cost of revenue |  | 136,164 |  |  | 102,415 |  |  | 243,853 |  |  | 198,804 |
Gross profit |  | 37,293 |  |  | 39,826 |  |  | 68,463 |  |  | 76,545 |
Operating expenses: |  |  |  |  |  |  |  |
Selling, general and administrative |  | 28,116 |  |  | 26,632 |  |  | 56,230 |  |  | 53,150 |
Acquisition-related retention expense and contingent consideration |  | 230 |  |  | 795 |  |  | 379 |  |  | 1,222 |
Amortization of intangibles |  | 1,695 |  |  | 1,757 |  |  | 3,469 |  |  | 3,620 |
Total operating expenses |  | 30,041 |  |  | 29,184 |  |  | 60,078 |  |  | 57,992 |
Operating income |  | 7,252 |  |  | 10,642 |  |  | 8,385 |  |  | 18,553 |
Other (expenses) income: |  |  |  |  |  |  |  |
Interest expense |  | (773) |  |  | (563) |  |  | (1,474) |  |  | (1,089) |
Interest income |  | 1 |  |  | 334 |  |  | 16 |  |  | 704 |
Gain on disposition of property and equipment |  | 81 |  |  | 407 |  |  | 319 |  |  | 740 |
Gain (loss) on change in fair value of interest rate swap |  | 22 |  |  | (56) |  |  | 60 |  |  | (153) |
Total other (expense) income |  | (669) |  |  | 122 |  |  | (1,079) |  |  | 202 |
Income before income taxes |  | 6,583 |  |  | 10,764 |  |  | 7,306 |  |  | 18,755 |
Income tax expense (benefit) |  | 1,836 |  |  | 3,002 |  |  | (1,821) |  |  | 779 |
Net income |  | $ | 4,747 |  |  | $ | 7,762 |  |  | $ | 9,127 |  |  | $ | 17,976 |
Earnings Per Share (“EPS”) |  |  |  |  |  |  |  |
Earnings per common share: |  |  |  |  |  |  |  |
Basic |  | $ | 0.40 |  |  | $ | 0.67 |  |  | $ | 0.77 |  |  | $ | 1.56 |
Diluted |  | $ | 0.39 |  |  | $ | 0.64 |  |  | $ | 0.76 |  |  | $ | 1.48 |
Weighted average number of shares outstanding: |  |  |  |  |  |  |  |
Basic |  | 11,921,067 |  |  | 11,624,639 |  |  | 11,840,680 |  |  | 11,522,614 |
Diluted |  | 12,040,218 |  |  | 12,114,221 |  |  | 12,047,368 |  |  | 12,106,967 |

The accompanying notes are an integral part of these condensed consolidated financial statements.
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LIMBACH HOLDINGS, INC.
Condensed Consolidated Statements of Stockholders’ Equity (Unaudited)

| Number of Shares |  |  |  |  |  |  |  |  |  |
(in thousands, except share amounts) | Common stock |  | Treasury stock |  | Common stock |  | Additional paid-in capital |  | Treasury stock, at cost |  | Retained earnings |  | Stockholders’ equity
Balance at December 31, 2025 | 11,806,466 |  |  | (179,652) |  |  | $ | 1 |  |  | $ | 97,335 |  |  | $ | (2,000) |  |  | $ | 100,325 |  |  | $ | 195,661 |
Non-cash stock-based compensation | — |  |  | — |  |  | — |  |  | 1,854 |  |  | — |  |  | — |  |  | 1,854 |
Shares issued related to vested restricted stock units | 290,948 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Tax withholding related to vested restricted stock units | — |  |  | — |  |  | — |  |  | (5,817) |  |  | — |  |  | — |  |  | (5,817) |
Shares issued related to employee stock purchase plan | 3,305 |  |  | — |  |  | — |  |  | 257 |  |  | — |  |  | — |  |  | 257 |
Net income | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 4,380 |  |  | 4,380 |
Balance at March 31, 2026 | 12,100,719 |  |  | (179,652) |  |  | $ | 1 |  |  | $ | 93,629 |  |  | $ | (2,000) |  |  | $ | 104,705 |  |  | $ | 196,335 |
Non-cash stock-based compensation | — |  |  | — |  |  | — |  |  | 2,066 |  |  | — |  |  | — |  |  | 2,066 |
Net income | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 4,747 |  |  | 4,747 |
Balance at June 30, 2026 | 12,100,719 |  |  | (179,652) |  |  | $ | 1 |  |  | $ | 95,695 |  |  | $ | (2,000) |  |  | $ | 109,452 |  |  | $ | 203,148 |

| Number of Shares |  |  |  |  |  |  |  |  |  |
(in thousands, except share amounts) | Common stock |  | Treasury stock |  | Common stock |  | Additional paid-in capital |  | Treasury stock, at cost |  | Retained earnings |  | Stockholders’ equity
Balance at December 31, 2024 | 11,452,753 |  |  | (179,652) |  |  | $ | 1 |  |  | $ | 94,229 |  |  | $ | (2,000) |  |  | $ | 61,261 |  |  | $ | 153,491 |
Non-cash stock-based compensation | — |  |  | — |  |  | — |  |  | 1,594 |  |  | — |  |  | — |  |  | 1,594 |
Shares issued related to vested restricted stock units | 349,217 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Tax withholding related to vested restricted stock units | — |  |  | — |  |  | — |  |  | (4,338) |  |  | — |  |  | — |  |  | (4,338) |
Shares issued related to employee stock purchase plan | 2,321 |  |  | — |  |  | — |  |  | 169 |  |  | — |  |  | — |  |  | 169 |
Net income | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 10,214 |  |  | 10,214 |
Balance at March 31, 2025 | 11,804,291 |  |  | (179,652) |  |  | $ | 1 |  |  | $ | 91,654 |  |  | $ | (2,000) |  |  | $ | 71,475 |  |  | $ | 161,130 |
Non-cash stock-based compensation | — |  |  | — |  |  | — |  |  | 1,642 |  |  | — |  |  | — |  |  | 1,642 |
Net income | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 7,762 |  |  | 7,762 |
Balance at June 30, 2025 | 11,804,291 |  |  | (179,652) |  |  | $ | 1 |  |  | $ | 93,296 |  |  | $ | (2,000) |  |  | $ | 79,237 |  |  | $ | 170,534 |

The accompanying notes are an integral part of these condensed consolidated financial statements.
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LIMBACH HOLDINGS, INC.
Condensed Consolidated Statements of Cash Flows (Unaudited)

| Six Months Ended June 30,
(in thousands) | 2026 |  | 2025
Cash flows from operating activities: |  |  |
Net income | $ | 9,127 |  |  | $ | 17,976 |
Adjustments to reconcile net income to cash provided by operating activities: |  |  |
Depreciation and amortization | 8,725 |  |  | 7,995 |
Provision for credit losses | 224 |  |  | 139 |
Non-cash stock-based compensation expense | 3,920 |  |  | 3,236 |
Non-cash operating lease expense | 2,223 |  |  | 1,992 |
Amortization of debt issuance costs | 32 |  |  | 21 |
Deferred income tax (benefit) provision | (1,821) |  |  | 128 |
Gain on sale of property and equipment | (319) |  |  | (740) |
Acquisition-related retention expense and contingent consideration | 379 |  |  | 1,222 |
(Gain) loss on change in fair value of interest rate swap | (60) |  |  | 153 |
Changes in operating assets and liabilities: |  |  |
Accounts receivable | (16,347) |  |  | 6,455 |
Contract assets and contract liabilities, net(1) | 15,913 |  |  | (10,775) |
Other current assets | (7,471) |  |  | (1,040) |
Accounts payable, including retainage | 6,123 |  |  | (5,428) |
Prepaid income taxes | (2,201) |  |  | (1,916) |
Accrued taxes payable | (1,152) |  |  | (1,470) |
Operating lease liabilities | (2,134) |  |  | (1,968) |
Accrued expenses and other current liabilities | (397) |  |  | (10,890) |
Payments of contingent consideration liability in excess of acquisition-date fair value | (3,404) |  |  | (711) |
Other long-term liabilities | (432) |  |  | (137) |
Net cash provided by operating activities | 10,928 |  |  | 4,242 |
Cash flows from investing activities: |  |  |
Consolidated Mechanical Transaction, measurement period adjustment | — |  |  | (3) |
Proceeds from sale of property and equipment | 380 |  |  | 926 |
Advances from joint ventures | 1 |  |  | — |
Purchases of property and equipment | (1,046) |  |  | (3,075) |
Net cash used in investing activities | (665) |  |  | (2,152) |
Cash flows from financing activities: |  |  |
Payments on Wintrust Revolving Loan | (93,128) |  |  | — |
Proceeds from Wintrust Revolving Loan | 100,628 |  |  | — |
Payments of debt issuance costs | — |  |  | (125) |
Payments of contingent consideration liability up to acquisition-date fair value | (3,507) |  |  | (2,289) |
Payments on finance leases | (2,501) |  |  | (1,767) |
Proceeds from the sale of shares to cover employee taxes | 5,945 |  |  | 6,344 |
Taxes paid related to net-share settlement of equity awards | (12,037) |  |  | (10,684) |
Proceeds from contributions to Employee Stock Purchase Plan | 521 |  |  | 441 |
Net cash used in financing activities | (4,079) |  |  | (8,080) |
Increase (decrease) in cash, cash equivalents and restricted cash | 6,184 |  |  | (5,990) |
Cash, cash equivalents and restricted cash, beginning of period | 11,410 |  |  | 44,995 |
Cash, cash equivalents and restricted cash, end of period | $ | 17,594 |  |  | $ | 39,005 |
Supplemental disclosures of cash flow information |  |  |
Noncash investing and financing transactions: |  |  |
Kent Island Transaction, measurement period adjustment | $ | — |  |  | $ | (94) |
Right of use assets obtained in exchange for new operating lease liabilities | 710 |  |  | 1,676 |
Right of use assets obtained in exchange for new finance lease liabilities | 177 |  |  | 7,933 |
Right of use assets disposed or adjusted modifying finance lease liabilities | 20 |  |  | — |
Interest paid | 1,453 |  |  | 1,058 |
Cash paid for income taxes | $ | 3,353 |  |  | $ | 4,023 |

(1) The Company refined the presentation of contract-related balances within operating activities of the condensed consolidated statements of cash flows. Changes in contract assets and contract liabilities are now presented on a net basis, rather than as separate line items, to
align with the Company’s presentation of net contract positions. Prior-period amounts have been conformed for comparability, where applicable. This presentation change did not impact net cash provided by operating activities.
The accompanying notes are an integral part of these condensed consolidated financial statements.
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LIMBACH HOLDINGS, INC.
Notes to Condensed Consolidated Financial Statements (Unaudited)
Note 1 – Business and Organization
Limbach Holdings, Inc. (the “Company,” “we” or “our”), a Delaware corporation headquartered in Tampa, Florida is a building systems solutions firm that designs, delivers, and maintains mechanical (heating, ventilation, and air conditioning), electrical, plumbing, and controls (“MEPC”) systems. The Company partners with building owners and operators of mission-critical facilities across healthcare, industrial and manufacturing, data centers, life sciences, higher education, and cultural and entertainment markets. As of June 30, 2026, the Company had approximately 1,600 employees across 21 offices throughout the Eastern and Midwestern regions of the United States. The Company strives to be an indispensable partner by combining its national capabilities with strong local execution and talent to deliver proactive, safe, and reliable solutions for complex facilities. Operating on a connected platform, the Company integrates engineering expertise with field execution to provide customized MEPC infrastructure solutions that address both operational and capital project needs, optimizing performance, enhancing reliability, and ensuring long-term safety.
The Company operates in two segments, (i) Owner Direct Relationships (“ODR”), in which the Company performs owner direct projects and/or provides maintenance or service primarily on MEPC systems, and specialty contracting projects to existing buildings direct to, or assigned by, building owners or operators, and (ii) General Contractor Relationships (“GCR”), in which the Company generally manages new construction or renovation projects that involve primarily MEPC systems awarded to the Company by general contractors or construction managers. The Company’s work is primarily performed under fixed-price, modified fixed price, and time and materials contracts over periods of typically less than two years.
Note 2 – Significant Accounting Policies
Basis of Presentation
References in these financial statements to the Company refer collectively to the accounts of Limbach Holdings, Inc. and its wholly-owned subsidiaries, including Limbach Holdings LLC (“LHLLC”), Limbach Facility Services LLC (“LFS”), Limbach Company LLC (“LC LLC”), Limbach Company LP (“LC LP”), Harper Limbach LLC (“Harper”), Harper Limbach Construction LLC (“Harper Construction LLC”), Limbach Facility & Project Solutions LLC (“LFPS”), Jake Marshall, LLC (“JMLLC”), Coating Solutions, LLC (“CSLLC”), ACME Industrial Piping, LLC (“ACME”), Industrial Air, LLC (“Industrial Air”), Kent Island Mechanical, LLC (“Kent Island”), Consolidated Mechanical, LLC (“Consolidated Mechanical”) and Pioneer Power, LLC (“Pioneer Power”) for all periods presented, unless otherwise indicated. All intercompany balances and transactions have been eliminated.
The accompanying unaudited condensed consolidated financial statements were prepared using generally accepted accounting principles (“GAAP”) for interim financial information and with the requirements of Form 10-Q and applicable rules of Regulation S-X of the Securities and Exchange Commission (“SEC”). Consequently, certain information and note disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to those rules and regulations, although the Company believes that the disclosures made are adequate to make the information not misleading. Readers of this report should refer to the consolidated financial statements and the notes thereto included in the Company’s most recent Annual Report on Form 10-K filed with the SEC on March 2, 2026.
Use of Estimates
The preparation of the condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements for assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, the reported amounts of revenue and expenses during the reported period, and the accompanying notes. Management believes that its most significant estimates and assumptions have been based on reasonable and supportable assumptions and the resulting estimates are reasonable for use in the preparation of the condensed consolidated financial statements. The Company’s significant estimates include estimates associated with revenue recognition on construction contracts, costs incurred through each balance sheet date, intangibles, property and equipment, fair value accounting for acquisitions, insurance reserves, income tax valuation allowances, fair value of contingent consideration arrangements and contingencies. If the underlying estimates and assumptions upon which the condensed consolidated financial statements are based change in the future, actual amounts may differ from those included in the accompanying condensed consolidated financial statements.
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Unaudited Interim Financial Information
The accompanying interim Condensed Consolidated Balance Sheets, Condensed Consolidated Statements of Operations, Condensed Consolidated Statements of Stockholders’ Equity and Condensed Consolidated Statements of Cash Flows for the periods presented are unaudited. Also, within the notes to the condensed consolidated financial statements, the Company has included unaudited information for these interim periods. These unaudited interim condensed consolidated financial statements have been prepared in accordance with GAAP. In the Company’s opinion, the accompanying unaudited condensed consolidated financial statements contain all normal and recurring adjustments necessary for a fair statement of the Company’s financial position as of June 30, 2026, its results of operations and equity for the three and six months ended June 30, 2026 and 2025 and its cash flows for the six months ended June 30, 2026 and 2025. The results for the three and six months ended June 30, 2026 are not necessarily indicative of the results to be expected for the year ending December 31, 2026.
The Condensed Consolidated Balance Sheet as of December 31, 2025 was derived from the Company’s audited financial statements included in its Annual Report on Form 10-K filed with the SEC on March 2, 2026, but is presented as condensed and does not contain all of the footnote disclosures from the annual financial statements.
Recent Accounting Pronouncements
In July 2025, the FASB issued ASU 2025-05, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets. ASU 2025-05 provides a practical expedient that all entities can use when estimating expected credit losses for current accounts receivable and current contract assets arising from transactions accounted for under Accounting Standards Update (“ASC”) Topic 606 – Revenue from Contracts with Customers. Under this practical expedient, an entity is allowed to assume that the current conditions it has applied in determining credit loss allowances for current accounts receivable and current contract assets remain unchanged for the remaining life of those assets. The Company adopted ASU 2025-05 effective January 1, 2026 on a prospective basis and elected to apply the practical expedient to its current accounts receivable and contract assets. The adoption of ASU 2025-05 did not have a material impact on the Company’s condensed consolidated financial statements or related disclosures.
In November 2024, the FASB issued ASU 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, and in January 2025, the FASB issued ASU 2025-01, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Clarifying the Effective Date. ASU 2024-03 requires additional disclosure of the nature of expenses included in the income statement as well as disclosures about specific types of expenses included in the expense captions presented in the income statement. ASU 2024-03, as clarified by ASU 2025-01, is effective for fiscal years beginning after December 15, 2026, and interim periods beginning after December 15, 2027. Companies have the option to apply this guidance either on a retrospective or prospective basis, and early adoption is permitted. The Company is currently evaluating the impact that the adoption of these standards will have on its condensed consolidated financial statements and disclosures.
Note 3 – Acquisitions
Pioneer Power
On July 1, 2025 (the "Pioneer Power Effective Date"), the Company, through LFS, acquired all of the outstanding equity interests of Pioneer Power (the “Pioneer Power Transaction”) for net cash consideration of $65.7 million, after giving effect to cash acquired as part of the transaction. The acquisition was funded through a combination of cash on hand and borrowings under the Company’s revolving credit facility. Approximately $4.1 million of the cash consideration was initially held in escrow for indemnification purposes, a portion of which has subsequently been released. Pioneer Power is a provider of industrial and institutional mechanical solutions serving healthcare, food, power/utility, oil refining and other select markets in the greater Twin Cities region of Minnesota and upper Midwest regions. The acquisition further expanded the Company’s footprint in the core Midwest and extended its reach into new geographic markets in the upper Midwest regions. As a result of the Pioneer Power Transaction, Pioneer Power became a wholly-owned indirect subsidiary of the Company.
The Pioneer Power Transaction was accounted for as a business combination using the acquisition method of accounting. As a result of the acquisition, the Company recognized goodwill of $39.5 million, which was allocated between the Company’s ODR and GCR segments and is expected to be fully deductible for income tax purposes. The goodwill recognized is primarily attributable to anticipated future earnings of the acquired business.
During the measurement period, the Company recorded measurement period adjustments related to the Pioneer Power Transaction as additional information became available regarding the facts and circumstances that existed as of the acquisition date. The Company finalized the purchase price allocation during the three months ended June 30, 2026, and the measurement period expired on June 30, 2026. The following table presents the final purchase price allocation, including cumulative
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measurement period adjustments recorded through June 30, 2026. Any excess of the purchase price over the fair value of the identifiable net assets acquired was recorded as goodwill.

(in thousands) |  | Purchase Price Allocation |  | Cumulative Measurement Period Adjustments Through June 30, 2026(1) |  | Adjusted Purchase Price Allocation |  |  |  |
Consideration: |  |  |  |  |  |  |  |  |  |
Cash |  | $ | 66,612 |  |  | $ | — |  |  | $ | 66,612 |  |  |  |  |
Total Consideration |  | 66,612 |  |  | — |  |  | 66,612 |  |  |  |  |
Fair value of assets acquired: |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | 961 |  |  | — |  |  | 961 |  |  |  |  |
Accounts receivable |  | 18,416 |  |  | — |  |  | 18,416 |  |  |  |  |
Contract assets |  | 4,176 |  |  | 920 |  |  | 5,096 |  |  |  |  |
Other current assets |  | 58 |  |  | — |  |  | 58 |  |  |  |  |
Property and equipment |  | 6,291 |  |  | — |  |  | 6,291 |  |  |  |  |
Intangible assets |  | 16,200 |  |  | — |  |  | 16,200 |  |  |  |  |
Amount attributable to assets acquired |  | 46,102 |  |  | 920 |  |  | 47,022 |  |  |  |  |
Fair value of liabilities assumed: |  |  |  |  |  |  |  |  |  |
Accounts payable, including retainage |  | 8,071 |  |  | 38 |  |  | 8,109 |  |  |  |  |
Accrued expenses and other current liabilities |  | 1,527 |  |  | (150) |  |  | 1,377 |  |  |  |  |
Contract liabilities |  | 6,506 |  |  | 3,931 |  |  | 10,437 |  |  |  |  |
Amount attributable to liabilities assumed |  | 16,104 |  |  | 3,819 |  |  | 19,923 |  |  |  |  |
Goodwill |  | $ | 36,614 |  |  | $ | 2,899 |  |  | $ | 39,513 |  |  |  |  |

(1) The cumulative measurement period adjustments primarily related to refinements of acquired working capital balances, including accounts payable, accrued expenses and other current liabilities, and contract assets and contract liabilities, based on additional information regarding facts and circumstances that existed as of the acquisition date. The net effect of these adjustments was recorded as a corresponding adjustment to goodwill. Certain contract liability adjustments may be subject to recovery. As of June 30, 2026, no receivable has been recognized in connection with such potential recoveries. Any future amounts recovered will not result in adjustments to the final purchase price allocation.
The acquisition of Pioneer Power contributed $30.9 million and $54.5 million of total revenue for the three and six months ended June 30, 2026, respectively. Pioneer Power did not have a material contribution to net income for the three and six months ended June 30, 2026. Pioneer Power operates at a lower gross margin profile relative to the Company’s legacy ODR operations. Management continues to integrate Pioneer Power into the Company’s broader operating model with the objective of enhancing operating efficiencies and improving profitability over time.
Note 4 – Revenue from Contracts with Customers
The Company’s revenue is primarily derived from construction-type and services contracts to deliver MEPC systems services to its customers. Such work is primarily performed under fixed-price, modified fixed-price, and time and materials contracts over periods of typically less than two years.
Construction-type contract revenue is primarily derived from fixed-price and modified fixed-price contracts. For the majority of these contracts, the Company’s performance obligations are satisfied over time because the customer controls the asset as it is created or enhanced or because the Company’s performance does not create an asset with an alternative use and the Company has an enforceable right to payment for performance completed to date. For contracts satisfied over time, the Company recognizes revenue using an input method based on costs incurred relative to total estimated costs at completion (the cost-to-cost method), which management believes depicts the transfer of control of services to the customer. The Company believes its extensive experience with MEPC systems projects, together with its internal cost estimation and review processes, enables it to reasonably estimate contract costs and mitigate the risk of cost overruns.
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With respect to service contracts, the Company’s service arrangements generally include (i) fixed-price service contracts, typically for maintenance, repair and retrofit work over a period, commonly one year, and (ii) time and materials or similar service work performed on an as-needed basis. Revenue from fixed-price service contracts is generally recognized over time on a systematic basis that depicts performance over the contract term, which is typically on a straight-line basis when services are provided evenly over the contract period. Revenue derived from time and materials and other service work is recognized when the services are performed.
The Company generally invoices customers on a monthly basis based on a schedule of values that breaks down the contract amount into discrete billing items. Costs and estimated earnings in excess of billings on uncompleted contracts are recorded as a contract asset until billable under the contract terms. Billings in excess of costs and estimated earnings on uncompleted contracts are recorded as a contract liability until the related revenue is recognizable.
Contract Assets and Contract Liabilities
Contract assets represent the Company’s conditional right to consideration for goods or services transferred to customers when that right is conditioned on something other than the passage of time. Contract liabilities represent the Company’s obligation to transfer goods or services to customers for which consideration has been received or is due.
The Company’s contracts commonly include retainage provisions, pursuant to which a portion of billed consideration is contractually withheld by customers until achievement of specified contractual milestones, such as substantial completion, final acceptance, or satisfaction of defined performance criteria. Retainage does not represent an unconditional right to payment and is therefore not considered a trade receivable. Accordingly, retainage is reflected within contract balances based on the related net billing position.
Contract assets include costs and estimated earnings in excess of billings on uncompleted contracts and retainage associated with contracts for which the Company has a conditional right to consideration. The components of the contract asset balances as of the respective dates were as follows:

(in thousands) | June 30, 2026 |  | December 31, 2025 |  | Change
Contract assets |  |  |  |  |
Costs and estimated earnings in excess of billings on uncompleted contracts | $ | 27,399 |  |  | $ | 29,254 |  |  | $ | (1,855) |
Retainage receivable, net | 14,188 |  |  | 16,213 |  |  | (2,025) |
Total contract assets, net | $ | 41,587 |  |  | $ | 45,467 |  |  | $ | (3,880) |

Contract liabilities
Contract liabilities include billings in excess of contract costs and estimated earnings on uncompleted contracts, provisions for losses and amounts related to retainage associated with overbilled contracts, which reduce billings in excess of costs until such payment become payable under contract terms. The components of the contract liability balances as of the respective dates were as follows:

(in thousands) | June 30, 2026 |  | December 31, 2025 |  | Change
Contract liabilities |  |  |  |  |
Billings in excess of costs and estimated earnings on uncompleted contracts, net | $ | 34,895 |  |  | $ | 20,889 |  |  | $ | 14,006 |
Provisions for losses | 232 |  |  | 47 |  |  | 185 |
Total contract liabilities, net | $ | 35,127 |  |  | $ | 20,936 |  |  | $ | 14,191 |

Billings in excess of costs and estimated earnings on uncompleted contracts represent the excess of contract billings to date over the amount of contract costs and profits (or contract revenue) recognized to date, net of retention receivables. The balance may fluctuate depending on the timing of contract billings and the recognition of contract revenue.
Provisions for losses are recognized in the condensed consolidated statements of operations at the uncompleted performance obligation level for the amount of total estimated losses in the period that evidence indicates that the estimated total cost of a performance obligation exceeds its estimated total revenue.
During the three and six months ended June 30, 2026, the Company recognized revenue of $4.8 million and $14.2 million, respectively, that was included in its contract liabilities balance at January 1, 2026. During the three and six months ended
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June 30, 2025, the Company recognized revenue of $8.8 million and $36.7 million, respectively, that was included in its contract liabilities balance at January 1, 2025.
Claims and Unapproved Change Orders
Contract assets may include amounts related to claims and unapproved change orders, which arise when there is a dispute regarding changes in scope or pricing, or when additional work is performed or costs are incurred prior to execution of a contract amendment. The Company estimates recoveries related to claims and unapproved change orders as variable consideration using the most likely amount method, to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur. Such amounts are billable upon resolution and execution of contract amendments or other written agreements. The estimated net realizable value of claims and unapproved change orders included within contract assets and contract liabilities was $16.4 million and $13.6 million as of June 30, 2026 and December 31, 2025 respectively.
Net Contract Position
The net (overbilling) underbilling position for contracts in process consisted of the following:

(in thousands) | June 30, 2026 |  | December 31, 2025
Revenue earned on uncompleted contracts | $ | 677,744 |  |  | $ | 614,448 |
Less: Billings to date | (685,240) |  |  | (606,083) |
Net (overbilling) underbilling | $ | (7,496) |  |  | $ | 8,365 |
(in thousands) | June 30, 2026 |  | December 31, 2025
Costs and estimated earnings in excess of billings on uncompleted contracts | $ | 27,399 |  |  | $ | 29,254 |
Billings in excess of costs and estimated earnings on uncompleted contracts, net | (34,895) |  |  | (20,889) |
Net (overbilling) underbilling | $ | (7,496) |  |  | $ | 8,365 |

Revisions in Contract Estimates
The Company recorded revisions in its contract estimates for certain ODR and GCR projects. During the three and six months ended June 30, 2026 and 2025, the Company did not record any material gross profit write-ups or write-downs that had a net gross profit impact of $1.0 million or more.
Remaining Performance Obligations
Remaining performance obligations represent the transaction price of firm orders for which work has not been performed and exclude unexercised contract options. The Company’s remaining performance obligations include projects that have a written award, a letter of intent, a notice to proceed or an agreed upon work order to perform work on mutually accepted terms and conditions.
As of June 30, 2026, the aggregate amount of the transaction prices allocated to the remaining performance obligations of the Company’s ODR and GCR segment contracts were $263.2 million and $200.1 million, respectively. The Company currently estimates that 69% and 57% of its ODR and GCR segment remaining performance obligations as of June 30, 2026, respectively, will be recognized as revenue during the remainder of 2026, with the substantial majority of remaining performance obligations to be recognized within 24 months, although the timing of the Company’s performance is not always under its control.
Additionally, the difference between remaining performance obligations and backlog is due to the exclusion of a portion of the Company’s ODR agreements under certain contract types from the Company’s remaining performance obligations as these contracts can be canceled for convenience at any time by the Company or the customer without considerable cost incurred by the customer.
Note 5 – Goodwill and Intangibles
Goodwill
Goodwill was $72.6 million and $70.6 million as of June 30, 2026 and December 31, 2025, respectively. The Company tests its goodwill and indefinite-lived intangible assets allocated to its reporting units for impairment annually on October 1, or more frequently if events or circumstances indicate that it is more likely than not that the fair value of its reporting units and indefinite-lived intangible assets are less than their carrying amount.
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The Company did not recognize any impairment charges on its goodwill or intangible assets during the three and six months ended June 30, 2026 and 2025.
The following table summarizes the carrying amount and changes in goodwill associated with the Company’s segments:

(in thousands) | GCR |  | ODR |  | Total
Goodwill as of December 31, 2025 | $ | 15,578 |  |  | $ | 55,022 |  |  | $ | 70,600 |
Measurement period adjustments - Pioneer Power Transaction(1) | — |  |  | 2,044 |  |  | 2,044 |
Goodwill as of June 30, 2026 | $ | 15,578 |  |  | $ | 57,066 |  |  | $ | 72,644 |

(1) The Company recorded cumulative measurement period adjustments during the six months ended June 30, 2026 primarily related to refinements of acquired working capital balances, including accounts payable, accrued expenses and other current liabilities, and contract liabilities, based on additional information regarding facts and circumstances that existed as of the acquisition date. The net effect of these adjustments was recorded as a corresponding adjustment to goodwill. See Note 3 – Acquisitions for further detail.
Intangible Assets
Intangible assets are comprised of the following:

(in thousands) | Gross carrying amount |  | Accumulated amortization |  | Net intangible assets, excluding goodwill
June 30, 2026 |  |  |  |  |
Amortized intangible assets: |  |  |  |  |
Customer relationships | $ | 47,620 |  |  | $ | (14,384) |  |  | $ | 33,236 |
Backlog | 5,960 |  |  | (5,960) |  |  | — |
Trade name, trademarks and intellectual property | 5,550 |  |  | (2,970) |  |  | 2,580 |
Total amortized intangible assets | 59,130 |  |  | (23,314) |  |  | 35,816 |
Unamortized intangible assets: |  |  |  |  |
Trade name – Limbach(1) | 9,960 |  |  | — |  |  | 9,960 |
Total unamortized intangible assets | 9,960 |  |  | — |  |  | 9,960 |
Total amortized and unamortized assets, excluding goodwill | $ | 69,090 |  |  | $ | (23,314) |  |  | $ | 45,776 |

(1) The Company has determined that its trade name has an indefinite useful life. The Limbach trade name has been in existence since the Company’s founding in 1901 and therefore is an established brand within the industry.

(in thousands) | Gross carrying amount |  | Accumulated amortization |  | Net intangible assets, excluding goodwill
December 31, 2025 |  |  |  |  |
Amortized intangible assets: |  |  |  |  |
Customer relationships | $ | 47,620 |  |  | $ | (11,741) |  |  | $ | 35,879 |
Backlog | 5,960 |  |  | (5,800) |  |  | 160 |
Trade name, trademarks and intellectual property | 5,550 |  |  | (2,362) |  |  | 3,188 |
Total amortized intangible assets | 59,130 |  |  | (19,903) |  |  | 39,227 |
Unamortized intangible assets: |  |  |  |  |
Trade name – Limbach | 9,960 |  |  | — |  |  | 9,960 |
Total unamortized intangible assets | 9,960 |  |  | — |  |  | 9,960 |
Total amortized and unamortized assets, excluding goodwill | $ | 69,090 |  |  | $ | (19,903) |  |  | $ | 49,187 |

Total amortization expense for the Company’s definite-lived intangible assets was $1.7 million and $3.5 million for the three and six months ended June 30, 2026, respectively, and $1.8 million and $3.6 million for the three and six months ended June 30, 2025, respectively.
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Note 6 – Debt
Long-term debt consists of the following obligations as of:

(in thousands) | June 30, 2026 |  | December 31, 2025
Wintrust Revolving Loans | 17,500 |  |  | 10,000 |
Finance leases – collateralized by vehicles, payable in monthly installments of principal, plus interest ranging from 4.50% to 8.60% through 2031 | 18,199 |  |  | 20,570 |
Financing liability | 5,351 |  |  | 5,351 |
Total debt | 41,050 |  |  | 35,921 |
Less - Current portion of long-term debt | (4,862) |  |  | (5,031) |
Less - Unamortized discount and debt issuance costs | (346) |  |  | (354) |
Long-term debt | $ | 35,842 |  |  | $ | 30,536 |

Wintrust Revolving Credit Facility
The Company maintains a senior secured revolving credit facility with Wheaton Bank & Trust Company, N.A., a subsidiary of Wintrust Financial Corporation (collectively, “Wintrust”), as administrative agent, pursuant to a Second Amended and Restated Credit Agreement originally entered into on May 5, 2023 (the “Second A&R Wintrust Credit Agreement”).
On June 27, 2025, LFS, LHLLC, and other designated parties entered into a Second Amendment to the Second A&R Wintrust Credit Agreement (the “Second Amendment”) with Wintrust, as administrative agent, and the other lenders party thereto. The Second Amendment amended the Second A&R Wintrust Credit Agreement, which governs the Company's senior secured revolving credit facility (the "Wintrust Revolving Credit Facility"). The Second Amendment provides for, among other things, (i) an upsize of the aggregate principal amount of the senior secured revolving credit facility from $50.0 million to $100.0 million, (ii) modifying the definition of “L/C Sublimit” to increase the sublimit for the issuance of letters of credit from $10.0 million to $20.0 million, (iii) an extension of the revolving credit scheduled maturity date from February 24, 2028 to July 1, 2030, (iv) a decrease in the applicable margins for Term SOFR and Prime Rate (each defined in the Second Amendment) revolving loans as determined with reference to LFS’s Senior Leverage Ratio (as defined in the Second Amendment), (v) a term loan conversion feature, allowing LFS, subject to certain conditions, to convert outstanding revolving loans into one or more term loan tranches, (vi) the removal of certain covenant requirements, specifically in relation to LFS’s Borrowing Base, as formerly defined in the Second A&R Wintrust Credit Agreement, and (vii) modification to certain defined terms to reflect updated operational and financial terms.
Following the execution of the Second Amendment, borrowings under the Wintrust Revolving Credit Facility bear interest, at LFS’s option, at either the Term SOFR (with a 0.15% floor) plus 2.50% or the Prime Rate (with a 3.0% floor), subject to a 95 basis point step-down based on LFS's Senior Leverage Ratio.
As of June 30, 2026 and December 31, 2025, the Company had $17.5 million and $10.0 million in borrowings outstanding under the Wintrust Revolving Credit Facility, respectively. During the three and six months ended June 30, 2026, the maximum amount outstanding under the Wintrust Revolving Credit Facility at any time was $32.4 million and the average daily balance was $20.4 million and $17.1 million, respectively. During the three and six months ended June 30, 2025, the maximum amount outstanding under the Wintrust Revolving Credit Facility at any time was $10.0 million and the average daily balance was $10.0 million.
For the three and six months ended June 30, 2026, borrowings under the Wintrust Revolving Credit Facility bore interest at a weighted average annual interest rate of 5.59% and 5.55%, respectively, inclusive of the net impact associated with the Company’s interest rate swap arrangement. For the three and six months ended June 30, 2025, borrowings under the Wintrust Revolving Credit Facility bore interest at a weighted average annual interest rate of 5.70% and 5.71%, respectively.
At June 30, 2026 and December 31, 2025, the Company had outstanding letters of credit of $7.0 million and $5.1 million, respectively, with its lender to secure obligations under its self-insurance program.
As of June 30, 2026, the Company was in compliance with all financial maintenance covenants under the Second A&R Wintrust Credit Agreement. Subsequent to June 30, 2026, the Company entered into an additional amendment to the Second A&R Wintrust Credit Agreement. See Note 15 – Subsequent Events for more information.
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The following is a summary of the applicable margin and commitment fees payable on the Wintrust Revolving Loan, as amended, credit commitment:

Level |  | Senior Leverage Ratio |  | Applicable Margin for SOFR Revolver loans |  | Applicable Margin for Prime Revolving loans |  | Applicable Margin for commitment fee
I |  | Greater than 1.00 to 1.00 |  | 2.50 | % |  | (0.70) | % |  | 0.25 | %
II |  | Less than or equal to 1.00 to 1.00 |  | 2.25 | % |  | (0.95) | % |  | 0.25 | %

Interest Rate Swap
The Company is party to an interest rate swap agreement to manage the risk associated with a portion of its variable-rate long-term debt. The interest rate swap involves the exchange of fixed-rate and variable-rate payments without the exchange of the underlying notional amount on which the interest payments are calculated. The swap agreement became effective on July 14, 2022 and will terminate on July 31, 2027. The notional amount of the swap agreement is $10.0 million with a fixed interest rate of 3.12% plus the SOFR Applicable Margin. If the one-month SOFR (as defined in the Second Amendment to the Second A&R Credit Agreement) is above the fixed rate, the counterparty pays the Company, and if the one-month SOFR is less than the fixed rate, the Company pays the counterparty, the difference between the fixed rate of 3.12% and the one-month SOFR. The Company has not designated this instrument as a hedge for accounting purposes. As a result, the change in fair value of the derivative instrument is recognized directly in earnings on the Company’s condensed consolidated statements of operations as a gain or loss on interest rate swap.
Sale-Leaseback Financing Transaction
On September 29, 2022, the Company completed a sale and leaseback transaction related to its facility in Pontiac, Michigan (the “Pontiac Facility”), with an aggregate transaction value of approximately $7.8 million, consisting of a purchase price of approximately $5.4 million and up to $2.4 million of tenant improvement allowances.
In connection with the transaction, the Company entered into a 25-year lease agreement with two five-year renewal options. Annual minimum rent is approximately $0.5 million, payable monthly and subject to annual escalations of approximately 2.5%. The lease includes a one-time termination option at the end of the fifteenth lease year, which would require payment of a termination fee of approximately $1.7 million if exercised.
The Company accounted for the transaction as a failed sale-leaseback and financing arrangement under ASC Topic 842 – Leases, as the lease was classified as a finance lease and control of the property did not transfer. Accordingly, no gain or loss was recognized, and the property was not derecognized from the Company’s condensed consolidated balance sheets. Proceeds received were recorded as a financing liability and are repaid through lease payments, which are allocated between principal and interest.
As of June 30, 2026, the financing liability was $5.0 million, net of issuance costs, which was recognized within long-term debt on the Company’s condensed consolidated balance sheets. For both the three and six months ended June 30, 2026 and 2025, approximately $0.1 million and $0.3 million of interest expense associated with the financing was recognized, respectively.
Note 7 – Equity
The Company’s second amended and restated certificate of incorporation currently authorizes the issuance of 100,000,000 shares of common stock, par value $0.0001, and 1,000,000 shares of preferred stock, par value $0.0001.
Incentive Plan
Upon the consummation of the Company’s business combination with LHLLC in July 2016, the Company adopted an omnibus incentive plan (as amended, the “Omnibus Incentive Plan”) pursuant to which equity awards may be granted thereunder. See Note 14 – Management Incentive Plans for a discussion of the Company’s management incentive plans for restricted stock units (“RSUs”) granted, vested, forfeited and remaining unvested.
Share Repurchase Program
In December 2025, the Company announced that its Board of Directors authorized a share repurchase program (the “Share Repurchase Program”), pursuant to which the Company may, from time to time, purchase up to $50.0 million of shares of its common stock through December 15, 2027. Share repurchases may be executed through various means, including, without limitation, open market transactions, privately negotiated transactions or by other means in accordance with federal securities
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laws. Repurchases may also be made under Rule 10b5-1 plans. The Share Repurchase Program does not obligate the Company to acquire any particular amount of common stock, and the program may be suspended or terminated by the Company at any time at its discretion without prior notice. As of June 30, 2026, the Company has not repurchased any common stock under its Share Repurchase Program.
Employee Stock Purchase Plan
Upon approval of the Company’s stockholders on May 30, 2019, the Company adopted the Limbach Holdings, Inc. 2019 Employee Stock Purchase Plan (the “ESPP”). On January 1, 2020, the ESPP went into effect. The ESPP enables eligible employees, as defined by the ESPP, the right to purchase the Company’s common stock through payroll deductions during consecutive subscription periods at a purchase price of 85% of the fair market value of a share of the Company’s common stock at the end of each offering period. Annual purchases by participants are limited to the number of whole shares that can be purchased by an amount equal to ten percent of the participant's compensation or $5,000, whichever is less. Each offering period of the ESPP lasts six months, commencing on January 1st and July 1st of each year. The amounts collected from participants during a subscription period are used on the exercise date to purchase full shares of common stock. Participants may withdraw from an offering before the exercise date and obtain a refund of amounts withheld through payroll deductions. Compensation cost, representing the 15% discount applied to the fair market value of common stock, is recognized on a straight-line basis over the six-month vesting period during which employees perform related services. Under the ESPP, 500,000 shares are authorized to be issued. In January 2026, the Company issued 3,305 shares of its common stock to participants in the ESPP who contributed to the plan during the offering period ending December 31, 2025. In January 2025, the Company issued a total of 2,321 shares of its common stock to participants in the ESPP who contributed to the plan during the offering period ending December 31, 2024. As of June 30, 2026, 375,065 shares remain available for future issuance under the ESPP.
Note 8 – Fair Value Measurements
The Company measures the fair value of financial assets and liabilities in accordance with ASC Topic 820 – Fair Value Measurements and Disclosures, which defines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements. ASC Topic 820 establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value and requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to measurements involving significant unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are as follows:
•Level 1 — inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that are accessible at the measurement date;
•Level 2 — inputs other than quoted prices included in Level 1 that are observable for the asset or liability either directly or indirectly such as quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of assets or liabilities; and
•Level 3 — unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.
The Company believes that the carrying amounts of its financial instruments, including cash and cash equivalents, trade accounts receivable and accounts payable, consist primarily of instruments without extended maturities, which approximate fair value primarily due to their short-term maturities and low risk of counterparty default. The Company considers all highly liquid investments purchased with a maturity of 90 days or less on the date of purchase to be cash equivalents. Cash equivalents as of June 30, 2026 and December 31, 2025 consisted of overnight repurchase agreements in which cash from the Company’s main operating checking account is invested overnight in highly liquid, short-term investments and certain investments in money market funds sponsored by a large financial institution. For both the three and six months ending June 30, 2026, interest income in the aggregate was less than $0.1 million. For the three and six months ending June 30, 2025, the Company recognized interest income in the aggregate of approximately $0.3 million and $0.7 million, respectively. The Company has not experienced any losses in its cash and cash equivalents and management believes the Company is not exposed to significant credit risk with respect to such accounts.
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|  |  | Fair Value at Reporting Date Using
(in thousands) | June 30, 2026 |  | Level 1 |  | Level 2 |  | Level 3
Cash equivalents: |  |  |  |  |  |  |
Overnight repurchase agreements | $ | 7,780 |  |  | $ | 7,780 |  |  | $ | — |  |  | $ | — |
Total | $ | 7,780 |  |  | $ | 7,780 |  |  | $ | — |  |  | $ | — |
| December 31, 2025 |  | Level 1 |  | Level 2 |  | Level 3
Cash equivalents: |  |  |  |  |  |  |
Overnight repurchase agreements | $ | 10,245 |  |  | $ | 10,245 |  |  | $ | — |  |  | $ | — |
Total | $ | 10,245 |  |  | $ | 10,245 |  |  | $ | — |  |  | $ | — |

Wintrust Revolving Loans
The Company also believes that the carrying value of the Wintrust Revolving Loans approximates its respective fair value due to the variable rate on such debt. As of June 30, 2026, the Company determined that the fair value of the Wintrust Revolving Loans was $17.5 million. Such fair value was determined using discounted estimated future cash flows using level 3 inputs.
Earnout Payments
As a part of the total consideration for the Company’s November 2023 acquisition of Industrial Air, the former owner of Industrial Air was eligible to receive up to an aggregate of $6.5 million in cash, consisting of two individual tranches of $3.0 million and $3.5 million pursuant to the terms of the purchase agreement, if the gross profit of Industrial Air equaled or exceeded (i) $7.6 million in the 12-month period beginning on the closing date of the transaction (the “First IA Earnout Period”) or (ii) $8.8 million in the 12-month period beginning on the first anniversary of the closing date of the transaction (the “Second IA Earnout Period” and together with the First IA Earnout Period, the “IA Earnout Payments”). The Company initially recognized $3.2 million in contingent consideration as of the closing date of the transaction. The fair value of contingent IA Earnout Payments was based on generating growth rates on the projected gross margins of Industrial Air and calculating the associated contingent payments based on achieving the earnout targets, which were reassessed each reporting period. In February 2026 and February 2025, the Company made payments in the amount of $3.5 million and $3.0 million, respectively, to the former owner of Industrial Air related to the First and Second Industrial Air Earnout Periods.
As a part of the total consideration for the Company’s September 2024 acquisition of Kent Island, the former owner of Kent Island is eligible to receive up to an aggregate of $5.0 million in cash, consisting of two individual tranches of $2.5 million pursuant to the terms of the purchase agreement, if the gross profit of Kent Island equals or exceeds approximately (i) $3.3 million in the 12-month period beginning on the closing date of the transaction (the “First Kent Island Earnout Period”) or (ii) $0.2 million in the 12-month period beginning on the first anniversary of the closing date of the transaction (the “Second Kent Island Earnout Period” and together with the First Kent Island Earnout Period, the “Kent Island Earnout Payments”). The Company initially recognized $4.4 million in contingent consideration as of the closing date of the transaction. The fair value of contingent Kent Island Earnout Payments are based on generating growth rates on the projected gross margins of Kent Island and calculating the associated contingent payments based on achieving the earnout targets, which are reassessed each reporting period. In January 2026, the Company made a payment in the amount of $2.5 million to the former owner of Kent Island related to the First Kent Island Earnout Period.
As a part of the total consideration for Company’s December 2024 acquisition of Consolidated Mechanical, the former owner of Consolidated Mechanical is eligible to receive up to an aggregate of $2.0 million in cash, consisting of two individual tranches of $1.0 million pursuant to the terms of the purchase agreement, if the gross profit of Consolidated Mechanical equals or exceeds approximately (i) $6.8 million in the 12-month period beginning on the closing date of the transaction (the “First Consolidated Mechanical Earnout Period”) or (ii) $6.8 million in the 12-month period beginning on the first anniversary of the closing date of the transaction (the “Second Consolidated Mechanical Earnout Period” and together with the First Consolidated Mechanical Earnout Period, the “Consolidated Mechanical Earnout Payments”). The Company initially recognized $0.8 million in contingent consideration as of the closing date of the transaction. The fair value of contingent Consolidated Mechanical Earnout Payments is based on generating growth rates on the projected gross margins of Consolidated Mechanical and calculating the associated contingent payments based on achieving the earnout targets, which are reassessed each reporting period. In April 2026, the Company made a payment in the amount of $0.9 million to the former owner of Consolidated Mechanical related to the First Consolidated Mechanical Earnout Period.
Based on the Company’s ongoing assessment of the fair value of contingent earnout liabilities, the Company recorded a net increase in the estimated fair value of such liabilities of $0.1 million and $0.2 million for the three and six months ended
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June 30, 2026, respectively, which was presented in the acquisition-related retention expense and contingent consideration in the Company’s condensed consolidated statements of operations. For the three and six months ended June 30, 2025, the Company recorded a net increase in the estimated fair value of such liabilities of $0.8 million and $1.2 million, respectively. The Company determined the fair value of the earnout payments by utilizing the Monte Carlo Simulation method, which represents a Level 3 measurement.
The following table presents the carrying values of the Company’s contingent earnout payment obligations included in the accompanying condensed consolidated balance sheets, which approximated fair value at June 30, 2026 and December 31, 2025.

|  |  | Fair Value at Reporting Date Using
(in thousands) | June 30, 2026 |  | Level 1 |  | Level 2 |  | Level 3
Accrued expenses and other current liabilities: |  |  |  |  |  |  |
Second Kent Island Earnout Period | $ | 2,457 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,457 |
Second Consolidated Mechanical Earnout Period | 760 |  |  | — |  |  | — |  |  | 760 |
Total | $ | 3,217 |  |  | $ | — |  |  | $ | — |  |  | $ | 3,217 |
|  |  | Fair Value at Reporting Date Using
(in thousands) | December 31, 2025 |  | Level 1 |  | Level 2 |  | Level 3
Accrued expenses and other current liabilities: |  |  |  |  |  |  |
Second IA Earnout Period(1) | 3,500 |  |  | — |  |  | — |  |  | 3,500 |
First Kent Island Earnout Period(2) | 2,500 |  |  | — |  |  | — |  |  | 2,500 |
First Consolidated Mechanical Earnout Period(3) | 954 |  |  | — |  |  | — |  |  | 954 |
Other long-term liabilities: |  |  |  |  |  |  |
Second Kent Island Earnout Period | 2,372 |  |  | — |  |  | — |  |  | 2,372 |
Second Consolidated Mechanical Earnout Period | 636 |  |  | — |  |  | — |  |  | 636 |
Total | $ | 9,962 |  |  | $ | — |  |  | $ | — |  |  | $ | 9,962 |

(1) In February 2026, the Company made a $3.5 million payment to the former owner of Industrial Air related to the Second IA Earnout Period.
(2) In January 2026, the Company made a $2.5 million payment to the former owner of Kent Island related to the First Kent Island Earnout Period.
(3) In April 2026, the Company made a $0.9 million payment to the former owner of Consolidated Mechanical related to the First Consolidated Mechanical Earnout Period.
Interest Rate Swap
The fair value of the interest rate swap is determined using widely accepted valuation techniques and reflects the contractual terms of the interest rate swap including the period to maturity, and while there are no quoted prices in active markets, it uses observable market-based inputs, including interest rate curves and implied volatilities. The fair value analysis also considers a credit valuation adjustment to reflect nonperformance risk of both the Company and the single counterparty. The fair value of the interest rate contract has been determined using the market standard methodology of netting the discounted future fixed cash receipts (or payments) and the discounted expected variable cash payments (or receipts). The variable cash payments (or receipts) are based on an expectation of future interest rates (forward curves) derived from observable market interest rate curves. The interest rate swap is classified as a Level 2 item within the fair value hierarchy. As of June 30, 2026 and December 31, 2025, the Company determined that the fair value of the interest rate swap was approximately $0.1 million and less than $0.1 million, respectively, and is recognized in other assets on the Company’s condensed consolidated balance sheets. For the three and six months ended June 30, 2026, the Company recognized a gain of less than $0.1 million and approximately $0.1 million, respectively, on its condensed consolidated statements of operations associated with the change in fair value of the interest rate swap arrangement. For the three and six months ended June 30, 2025, the Company recognized a loss of $0.1 million and $0.2 million, respectively, on its condensed consolidated statements of operations associated with the change in fair value of the interest rate swap arrangement.
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Note 9 – Earnings per Share
Earnings per Share
The Company calculates earnings per share in accordance with ASC Topic 260 – Earnings Per Share (“EPS”). Basic earnings per share of the Company’s common stock applicable to common stockholders is computed by dividing earnings applicable to common stockholders by the weighted-average number of shares of the Company’s common stock outstanding and assumed to be outstanding. Diluted EPS assumes the dilutive effect of outstanding common stock warrants and shares issued in conjunction with the Company’s ESPP and RSUs, all using the treasury stock method.
The following table sets forth the computation of the basic and diluted earnings per share attributable to the Company’s common stockholders for the three and six months ended June 30, 2026 and 2025:

|  | Three Months Ended June 30, |  | Six Months Ended June 30, |  |
(in thousands, except per share amounts) |  | 2026 |  | 2025 |  | 2026 |  | 2025 |  |  |  |
EPS numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 4,747 |  |  | $ | 7,762 |  |  | $ | 9,127 |  |  | $ | 17,976 |  |  |  |  |
EPS denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares outstanding – basic |  | 11,921 |  |  | 11,625 |  |  | 11,841 |  |  | 11,523 |  |  |  |  |
Impact of dilutive securities |  | 119 |  |  | 490 |  |  | 206 |  |  | 584 |  |  |  |  |
Weighted average shares outstanding – diluted |  | 12,040 |  |  | 12,114 |  |  | 12,047 |  |  | 12,107 |  |  |  |  |
EPS: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.40 |  |  | $ | 0.67 |  |  | $ | 0.77 |  |  | $ | 1.56 |  |  |  |  |
Diluted |  | $ | 0.39 |  |  | $ | 0.64 |  |  | $ | 0.76 |  |  | $ | 1.48 |  |  |  |  |

The following table summarizes the securities that were antidilutive, and therefore, were not included in the computations of diluted income per share of the Company’s common stock:

|  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  | 2026 |  | 2025 |  | 2026 |  | 2025
Service-based RSUs |  | — |  |  | — |  |  | 40 |  |  | — |
Market-based RSUs |  | 9,278 |  |  | — |  |  | 10,523 |  |  | — |
Employee Stock Purchase Plan |  | — |  |  | 246 |  |  | — |  |  | 668 |
Total |  | 9,278 |  |  | 246 |  |  | 10,563 |  |  | 668 |

Note 10 – Income Taxes
The Company is taxed as a C corporation and files income tax returns in the U.S. federal jurisdiction and in various state jurisdictions.
For interim periods, the provision for income taxes (including federal, state and local taxes) is calculated based on the estimated annual effective tax rate, adjusted for certain discrete items for the full fiscal year. Cumulative adjustments to the Company’s estimate are recorded in the interim period in which a change in the estimated annual effective rate is determined. Each quarter the Company updates its estimate of the annual effective tax rate, and if its estimated tax rate changes, the Company makes a cumulative adjustment.
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The following table presents the Company’s income tax expense (benefit) and its income tax rate for the three and six months ended June 30, 2026 and 2025.

|  | Three Months Ended June 30, |  | Six Months Ended June 30,
(in thousands, except percentages) |  | 2026 |  | 2025 |  | 2026 |  | 2025
Income tax expense (benefit) |  | $ | 1,836 |  |  | $ | 3,002 |  |  | $ | (1,821) |  |  | $ | 779 |
Income tax rate |  | 27.9 | % |  | 27.9 | % |  | (24.9) | % |  | 4.2 | %

The U.S. federal statutory tax rate was 21% for each of the three and six months ended June 30, 2026 and 2025. The Company’s effective tax rate differed from the U.S. federal statutory tax rate primarily due to state income taxes, federal tax credits, other permanent adjustments and discrete tax items.
The Company’s effective tax rates for the six months ended June 30, 2026 and 2025 were significantly impacted by excess tax benefits related to the vesting of restricted stock units ("RSUs") (see Note 14) recognized discretely during the first quarter of each year. The amount of the excess tax benefits recognized was primarily dependent upon the Company’s stock price on the RSU vesting dates. These discrete tax benefits reduced the effective tax rate by 533.3% and 53.5% during the first quarter of 2026 and 2025, respectively.
No valuation allowance was required as of June 30, 2026 or December 31, 2025.
Note 11 – Operating Segments
As discussed in Note 1, the Company operates in two segments (i) ODR, in which the Company performs owner direct projects and/or provides maintenance or service primarily on MEPC systems, and specialty contracting projects to existing buildings direct to, or assigned by, building owners or operators, and (ii) GCR, in which the Company generally manages new construction or renovation projects that involve primarily MEPC systems awarded to the Company by general contractors or construction managers.
Segment information is prepared on the same basis the Company’s Chief Operating Decision Maker (“CODM”) reviews operating results for the purposes of allocating resources and assessing performance. The Company’s CODM is comprised of its President and Chief Executive Officer and Executive Vice President and Chief Financial Officer. The Company’s CODM evaluates segment performance and makes resource allocation decisions primarily based on gross profit. Gross profit is a key measure used by the CODM in the annual budgeting and forecasting process, as well as in periodic reviews of actual operating results compared to planned performance. The CODM uses the Company's gross profit measure to assess the operating performance of its reportable segments, establish business priorities, and make decisions regarding the allocation of capital and other resources among those segments.
In accordance with ASC Topic 280 – Segment Reporting, the Company has aggregated all of the ODR work performed at its branches into one ODR reportable segment and all of the GCR work performed at its branches into one GCR reportable segment. All transactions between segments are eliminated in consolidation.
All of the Company’s identifiable assets are located in the United States, which is where the Company is domiciled.
Condensed consolidated segment information for the three and six months ended June 30, 2026 and 2025 were as follows:
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| Three Months Ended June 30, |  | Six Months Ended June 30,
(in thousands) | 2026 |  | 2025 |  | 2026 |  | 2025
Statement of Operations Data: |  |  |  |  |  |  |
Revenue: |  |  |  |  |  |  |
ODR | $ | 128,414 |  |  | $ | 108,948 |  |  | $ | 228,225 |  |  | $ | 199,341 |
GCR | 45,043 |  |  | 33,293 |  |  | 84,091 |  |  | 76,008 |
Total revenue | 173,457 |  |  | 142,241 |  |  | 312,316 |  |  | 275,349 |
Cost of revenue: |  |  |  |  |  |  |
ODR | 97,654 |  |  | 77,359 |  |  | 174,481 |  |  | 141,591 |
GCR | 38,510 |  |  | 25,056 |  |  | 69,372 |  |  | 57,213 |
Total cost of revenue | 136,164 |  |  | 102,415 |  |  | 243,853 |  |  | 198,804 |
Gross profit: |  |  |  |  |  |  |
ODR | 30,760 |  |  | 31,589 |  |  | 53,744 |  |  | 57,750 |
GCR | 6,533 |  |  | 8,237 |  |  | 14,719 |  |  | 18,795 |
Total gross profit | 37,293 |  |  | 39,826 |  |  | 68,463 |  |  | 76,545 |
Selling, general and administrative(1) | 28,116 |  |  | 26,632 |  |  | 56,230 |  |  | 53,150 |
Acquisition-related retention expense and contingent consideration | 230 |  |  | 795 |  |  | 379 |  |  | 1,222 |
Amortization of intangibles | 1,695 |  |  | 1,757 |  |  | 3,469 |  |  | 3,620 |
Operating income | $ | 7,252 |  |  | $ | 10,642 |  |  | $ | 8,385 |  |  | $ | 18,553 |
Other (expenses) income: |  |  |  |  |  |  |
Interest expense | (773) |  |  | (563) |  |  | (1,474) |  |  | (1,089) |
Interest income | 1 |  |  | 334 |  |  | 16 |  |  | 704 |
Gain on disposition of property and equipment | 81 |  |  | 407 |  |  | 319 |  |  | 740 |
Gain (loss) on change in fair value of interest rate swap | 22 |  |  | (56) |  |  | 60 |  |  | (153) |
Total other (expenses) income | (669) |  |  | 122 |  |  | (1,079) |  |  | 202 |
Income before income taxes | $ | 6,583 |  |  | $ | 10,764 |  |  | $ | 7,306 |  |  | $ | 18,755 |

(1) Included within selling, general and administrative expenses was $2.1 million and $1.6 million of non-cash stock-based compensation expense for the three months ended June 30, 2026 and 2025, respectively, and $3.9 million and $3.2 million for the six months ended June 30, 2026 and 2025, respectively.
The Company does not identify capital expenditures and total assets by segment in its internal financial reports due in part to the shared use of a centralized fleet of vehicles and specialized equipment.
Note 12 - Leases
The Company leases real estate, vehicles and other equipment under operating lease arrangements. There have been no material changes to the Company’s lease accounting policies from those disclosed in its Annual Report on Form 10-K for the year ended December 31, 2025.
Southern California Sublease. The Company subleases substantially all of its Southern California leased office space through April 30, 2027. The Company remains obligated under the related master lease and would be required to satisfy its obligations to the landlord in the event of a sublessee default. Sublease income recognized in selling, general and administrative expense was approximately $0.3 million and $0.6 million for the three and six months ended June 30, 2026 and 2025, respectively.
The following table summarizes the lease amounts included in the Company’s condensed consolidated balance sheets:
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(in thousands) | Classification on the Condensed Consolidated Balance Sheets |  | June 30, 2026 |  | December 31, 2025
Assets |  |  |  |  |
Operating | Operating lease right-of-use assets(1)(2) |  | $ | 18,220 |  |  | $ | 19,792 |
Finance | Property and equipment, net(3)(4) |  | 19,259 |  |  | 22,002 |
Total lease assets |  |  | $ | 37,479 |  |  | $ | 41,794 |
Liabilities |  |  |  |  |
Current |  |  |  |  |
Operating | Current operating lease liabilities |  | $ | 4,592 |  |  | $ | 4,379 |
Finance | Current portion of long-term debt |  | 4,862 |  |  | 5,031 |
Noncurrent |  |  |  |  |
Operating | Long-term operating lease liabilities |  | 14,290 |  |  | 15,925 |
Finance | Long-term debt(5) |  | 18,688 |  |  | 20,890 |
Total lease liabilities |  |  | $ | 42,432 |  |  | $ | 46,225 |

(1) Operating lease assets are recorded net of accumulated amortization of $20.1 million at June 30, 2026 and $17.9 million at December 31, 2025.
(2) Includes approximately $0.7 million and $0.8 million at June 30, 2026 and December 31, 2025, respectively, related to a below-market lease recognized as a result of the Industrial Air acquisition, which was recorded as an increase to the Company’s operating lease right-of-use assets on its condensed consolidated balance sheet. The below-market lease will be amortized to amortization expense over the remaining lease term.
(3) Finance lease vehicle assets are recorded net of accumulated amortization of $9.5 million at June 30, 2026 and $8.2 million at December 31, 2025.
(4) Includes approximately $2.2 million of net property assets associated with the Company’s Pontiac Facility at both June 30, 2026 and December 31, 2025.
(5) Includes approximately $5.4 million associated with the Company’s sale and leaseback financing transaction at both June 30, 2026 and December 31, 2025. See Note 6 – Debt for further detail.
The following table summarizes the lease costs included in the Company’s condensed consolidated statements of operations for the three and six months ended June 30, 2026 and 2025:

|  |  | Three Months Ended June 30, |  | Six Months Ended June 30,
(in thousands) | Classification on the Condensed Consolidated Statement of Operations |  | 2026 |  | 2025 |  | 2026 |  | 2025
Operating lease cost | Cost of revenue(1) |  | $ | 813 |  |  | $ | 911 |  |  | $ | 1,613 |  |  | $ | 1,769 |
Operating lease cost | Selling, general and administrative(1) |  | 603 |  |  | 419 |  |  | 1,204 |  |  | 866 |
Finance lease cost |  |  |  |  |  |  |  |  |
Amortization | Cost of revenue(2) |  | 1,387 |  |  | 1,042 |  |  | 2,811 |  |  | 1,971 |
Interest | Interest expense, net(2) |  | 246 |  |  | 196 |  |  | 507 |  |  | 372 |
Total lease cost |  |  | $ | 3,049 |  |  | $ | 2,568 |  |  | $ | 6,135 |  |  | $ | 4,978 |

(1) Operating lease costs recorded in cost of revenue included $0.2 million of variable lease costs for both the three months ended June 30, 2026 and 2025, respectively, and $0.3 million for both the six months ended June 30, 2026 and 2025, respectively. In addition, $0.1 million of variable lease costs are included in selling, general and administrative for both the three months ended June 30, 2026 and 2025, and $0.2 million for both the six months ended June 30, 2026 and 2025. These variable costs consist of the Company’s proportionate share of operating expenses, real estate taxes and utilities.
(2) Finance lease costs recorded in cost of revenue includes variable lease costs of $1.2 million and $0.8 million for the three months ended June 30, 2026 and 2025, respectively, and $2.0 million and $1.9 million for the six months ended June 30, 2026 and 2025, respectively. These variable lease costs consist of fuel, maintenance, and sales tax charges.
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The future undiscounted minimum finance lease payments, as reconciled to the discounted minimum lease obligation indicated on the Company’s condensed consolidated balance sheets within current and long-term debt, less interest, and under current and long-term operating leases, less imputed interest, as of June 30, 2026 were as follows (in thousands):

Year ending: |  | Vehicles |  | Pontiac Facility |  | Total Finance Lease Obligations |  |  |  |  |  | Operating Lease Obligations |  | Sublease Receipts(1)
Remainder of 2026 |  | $ | 2,893 |  |  | $ | 272 |  |  | $ | 3,165 |  |  |  |  |  |  | $ | 2,853 |  |  | $ | 572 |
2027 |  | 5,209 |  |  | 555 |  |  | 5,764 |  |  |  |  |  |  | 5,051 |  |  | 495 |
2028 |  | 4,529 |  |  | 569 |  |  | 5,098 |  |  |  |  |  |  | 4,233 |  |  | 14 |
2029 |  | 4,697 |  |  | 583 |  |  | 5,280 |  |  |  |  |  |  | 3,537 |  |  | — |
2030 |  | 2,715 |  |  | 597 |  |  | 3,312 |  |  |  |  |  |  | 2,255 |  |  | — |
Thereafter |  | 50 |  |  | 12,552 |  |  | 12,602 |  |  |  |  |  |  | 3,985 |  |  | — |
Total minimum lease payments |  | 20,093 |  |  | 15,128 |  |  | 35,221 |  |  |  |  |  |  | 21,914 |  |  | $ | 1,081 |
Financing Component (2) |  | (1,894) |  |  | (9,777) |  |  | (11,671) |  |  |  |  |  |  | (3,032) |  |  |
Net present value of minimum lease payments |  | 18,199 |  |  | 5,351 |  |  | 23,550 |  |  |  |  |  |  | 18,882 |  |  |
Less: current portion of finance and operating lease obligations |  | (4,862) |  |  | — |  |  | (4,862) |  |  |  |  |  |  | (4,592) |  |  |
Long-term finance and operating lease obligations |  | $ | 13,337 |  |  | $ | 5,351 |  |  | $ | 18,688 |  |  |  |  |  |  | $ | 14,290 |  |  |

(1) Primarily associated with the aforementioned third-party sublease agreement.
(2) The financing component for finance lease obligations represents the interest component of finance leases that will be recognized as interest expense in future periods. The financing component for operating lease obligations represents the effect of discounting the lease payments to their present value.
The following is a summary of the lease terms and discount rates as of:

| June 30, 2026 |  | December 31, 2025
Weighted average lease term (in years): |  |  |
Operating | 5.12 |  | 5.43
Finance (1) | 3.57 |  | 3.95
Weighted average discount rate: |  |  |
Operating | 6.19 | % |  | 6.18 | %
Finance (1) | 5.36 | % |  | 5.41 | %

(1) Excludes the weighted average lease term and weighted average discount rate associated with the aforementioned sale-leaseback financing transaction, which has a Primary Term of 25 years and utilized an implicit rate of 11.11%. See Note 6 – Debt for further detail.
The following is a summary of other information and supplemental cash flow information related to finance and operating leases:

|  | Six Months Ended June 30,
(in thousands) |  | 2026 |  | 2025
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |
Operating cash flows from operating leases |  | $ | 2,723 |  |  | $ | 2,611 |
Operating cash flows from finance leases |  | 450 |  |  | 345 |
Financing cash flows from finance leases |  | 2,501 |  |  | 1,767 |
Right-of-use assets exchanged for lease liabilities: |  |  |  |
Operating leases |  | 710 |  |  | 1,676 |
Finance leases |  | 177 |  |  | 7,933 |
Right-of-use assets disposed or adjusted modifying finance leases liabilities |  | 20 |  |  | — |

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Note 13 – Commitments and Contingencies
Legal. The Company is continually engaged in administrative proceedings, arbitrations, and litigation with owners, general contractors, suppliers, employees, former employees and other unrelated parties, all arising in the ordinary courses of business. The ultimate resolution of these contingencies could, individually or in the aggregate, be material to the condensed consolidated financial statements. In the opinion of the Company’s management, the current belief is that the results of these actions will not have a material adverse effect on the financial position, results of operations, or cash flows of the Company.
Surety. The terms of its construction contracts frequently require that the Company obtain from surety companies, and provide to its customers, payment and performance bonds (“Surety Bonds”) as a condition to the award of such contracts. The Surety Bonds secure the Company’s payment and performance obligations under such contracts, and the Company has agreed to indemnify the surety companies for amounts, if any, paid by them in respect of Surety Bonds issued on its behalf. In addition, at the request of labor unions representing certain of the Company’s employees, Surety Bonds are sometimes provided to secure obligations for wages and benefits payable to or for such employees. Public sector contracts require Surety Bonds more frequently than private sector contracts, and accordingly, the Company’s bonding requirements typically increase as the amount of public sector work increases. As of June 30, 2026, the Company had approximately $107.3 million in surety bonds outstanding. The Surety Bonds are issued by surety companies in return for premiums, which vary depending on the size and type of bond.
Collective Bargaining Agreements. Many of the Company’s craft labor employees are covered by collective bargaining agreements. The agreements require the Company to pay specified wages, provide certain benefits and contribute certain amounts to multi-employer pension plans. If the Company withdraws from any of the multi-employer pension plans or if the plans were to otherwise become underfunded, the Company could incur additional liabilities related to these plans. Although the Company has been informed that some of the multi-employer pension plans to which it contributes have been classified as “critical” status, the Company is not currently aware of any significant liabilities related to this issue.
Self-insurance. The Company is substantially self-insured for workers’ compensation and general liability claims, in the view of the relatively high per-incident deductibles the Company absorbs under its insurance arrangements for these risks. The Company purchases workers’ compensation and general liability insurance under policies with per-incident deductibles of $250,000 per occurrence and a $7.9 million maximum aggregate deductible loss limit per year. Losses incurred over primary policy limits are covered by umbrella and excess policies up to specified limits with multiple excess insurers. The Company accrues for the unfunded portion of costs for both reported claims and claims incurred but not reported. The liability for unfunded reported claims and future claims is reflected on the condensed consolidated balance sheets as current and non-current liabilities. The liability is determined by establishing a reserve for each reported claim on a case-by-case basis based on the nature of the claim and historical loss experience for similar claims plus an allowance for the cost of incurred but not reported claims. The current portion of the liability is included in accrued expenses and other current liabilities on the condensed consolidated balance sheets. The non-current portion of the liability is included in other long-term liabilities on the condensed consolidated balance sheets.
The Company is self-insured related to medical and dental claims under policies with annual per-claimant and annual aggregate stop-loss limits. The Company accrues for the unfunded portion of costs for both reported claims and claims incurred but not reported. The liability for unfunded reported claims and future claims is reflected on the condensed consolidated balance sheets as a current liability in accrued expenses and other current liabilities.
The components of the self-insurance liability as of June 30, 2026 and December 31, 2025 are as follows:

(in thousands) | June 30, 2026 |  | December 31, 2025
Current liability — workers’ compensation and general liability | $ | 362 |  |  | $ | 539 |
Current liability — medical and dental | 619 |  |  | 621 |
Non-current liability | 515 |  |  | 915 |
Total liability | $ | 1,496 |  |  | $ | 2,075 |
Restricted cash | $ | 65 |  |  | $ | 65 |

The restricted cash balance represents an imprest cash balance set aside for the funding of workers' compensation and general liability insurance claims. This amount is replenished either when depleted or at the beginning of each month.
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Note 14 – Management Incentive Plans
The Company maintains the Omnibus Incentive Plan for the purpose of: (a) encouraging the profitability and growth of the Company through short-term and long-term incentives that are consistent with the Company’s objectives; (b) giving participants an incentive for excellence in individual performance; (c) promoting teamwork among participants; and (d) giving the Company a significant advantage in attracting and retaining key employees, directors and consultants. To accomplish such purposes, the Omnibus Incentive Plan, and such subsequent amendments to the Omnibus Incentive Plan, provides that the Company may grant options, stock appreciation rights, restricted shares, RSUs, performance-based awards (including performance-based restricted shares and restricted stock units), other share-based awards, other cash-based awards or any combination of the foregoing.
Service-Based Awards
The Company grants service-based stock awards in the form of RSUs. Service-based RSUs granted to executives, employees, and non-employee directors vest ratably, on an annual basis, over three years and in the case of certain awards to non-employee directors, over one year. The grant date fair value of the service-based awards was equal to the closing market price of the Company’s common stock on the date of grant. For the three months ended June 30, 2026 and 2025, the Company recognized $0.7 million and $0.6 million, respectively, of non-cash stock-based compensation expense related to outstanding service-based RSUs. For the six months ended June 30, 2026 and 2025, the Company recognized $1.4 million and $1.1 million, respectively, of stock-based compensation expense related to outstanding service-based RSUs.
The following table summarizes the Company’s service-based RSU activity for the six months ended June 30, 2026:

| Awards |  | Weighted-Average Grant Date Fair Value
Unvested at December 31, 2025 | 87,141 |  |  | $ | 46.20 |
Granted | 39,711 |  |  | 78.13 |
Vested | (58,179) |  |  | 35.61 |
Forfeited | (1,177) |  |  | 76.00 |
Unvested at June 30, 2026 | 67,496 |  |  | $ | 73.60 |

Performance-Based Awards
The Company has granted performance-based restricted stock units (“PRSUs”) under which shares of the Company’s common stock may be earned based on the Company’s performance compared to defined metrics. The number of shares earned under a performance award may vary from zero to 150% of the target shares awarded, based upon the Company’s performance compared to the metrics. The metrics used for the grant are determined by the Company’s Compensation Committee of the Board of Directors and are based on internal measures such as the achievement of certain predetermined adjusted EBITDA and EBITDA margin performance goals generally over a three-year period.
The Company recognizes non-cash stock-based compensation expense for these awards over the vesting period based on the projected probability of achievement of the performance conditions as of the end of each reporting period during the performance period and may periodically adjust the recognition of such expense, as necessary, in response to any changes in the Company’s forecasts with respect to the performance conditions. For the three months ended June 30, 2026 and 2025, the Company recognized $0.6 million and $0.7 million, respectively, of non-cash stock-based compensation expense related to outstanding PRSUs. For the six months ended June 30, 2026 and 2025, the Company recognized $1.1 million and $1.4 million, respectively, of stock-based compensation expense related to outstanding PRSUs. All unvested PRSU awards as of June 30, 2026 are related to awards granted in fiscal year 2024.
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The following table summarizes the Company’s PRSU activity for the six months ended June 30, 2026:

| Awards |  | Weighted-Average Grant Date Fair Value
Unvested at December 31, 2025 | 277,245 |  |  | $ | 21.58 |
Granted | — |  |  | — |
Performance factor adjustment(1) | 99,690 |  |  | 12.20 |
Vested | (299,083) |  |  | 12.20 |
Forfeited | (1,436) |  |  | 45.47 |
Unvested at June 30, 2026 | 76,416 |  |  | $ | 45.60 |

(1) Performance-based awards covering the three-year period ended December 31, 2025 were paid out in the first quarter of 2026 based on the approval of the Company’s Compensation Committee. The performance factor during the measurement period used to determine compensation payouts was 150% of the pre-defined metric target of 100%, which resulted in a positive performance factor adjustment and the issuance of 99,690 shares of the Company’s common stock as additional awards associated with the original grant.
Market-Based Awards
The Company grants market-based RSUs (“MRSUs”) to certain employees that vest based on the Company’s total shareholder return (“TSR”) relative to the TSR of the Russell 2000 Index over a three-year performance period. The number of shares that ultimately vest can range from 0% to 150% of the target award, based on the Company’s TSR percentile ranking relative to the Russell 2000 Index constituents during the performance period.
Because vesting is subject to a market condition, the grant date fair value of these awards was estimated using a Monte Carlo simulation model. The assumptions used in the model included expected volatility for the Company and the Russell 2000 Index, risk-free interest rates, expected dividend yields, and the correlation between the Company’s stock and the Russell 2000 Index. The grant date fair value is expensed over the requisite three-year performance period using a straight-line method, as long as the employee remains employed during the performance period. For the three months ended June 30, 2026, and 2025 the Company recognized $0.8 million and $0.4 million, respectively, of non-cash stock-based compensation expense related to outstanding MRSUs. For the six months ended June 30, 2026, and 2025 the Company recognized $1.4 million and $0.7 million, respectively, of non-cash stock-based compensation expense related to outstanding MRSUs.

| Awards |  | Weighted-Average Grant Date Fair Value
Unvested at December 31, 2025 | 47,786 |  |  | $ | 89.75 |
Granted | 61,411 |  |  | 82.26 |
Vested | — |  |  | — |
Forfeited | (2,302) |  |  | 86.48 |
Unvested at June 30, 2026 | 106,895 |  |  | $ | 85.52 |

Stock-Based Compensation Expense
Total recognized non-cash stock-based compensation expense amounted to $2.1 million and $1.6 million for the three months ended June 30, 2026 and 2025, respectively. For the six months ended June 30, 2026 and 2025, the Company recognized non-cash stock-based compensation expense of $3.9 million and $3.2 million, respectively. The aggregate fair value as of the vest date of RSUs that vested during the six months ended June 30, 2026 and 2025 was $31.2 million and $29.7 million, respectively. Total non-cash unrecognized stock-based compensation expense related to unvested RSUs that are probable of vesting was $10.1 million at June 30, 2026. These costs are expected to be recognized over a weighted average period of 1.84 years.
Note 15 – Subsequent Events
On July 24, 2026, LFS, LHLLC, and certain other designated parties entered into a Third Amendment to the Second Amended and Restated Wintrust Credit Agreement (the “Third Amendment”) with Wintrust, as administrative agent. The Third Amendment provides for, among other things, (i) an increase in the aggregate principal amount of the senior secured revolving
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credit facility from $100.0 million to $125.0 million, (ii) a reduction in the applicable margins for Term SOFR and Prime Rate revolving loans based on the Borrower’s Senior Leverage Ratio, and (iii) revisions to certain defined terms to reflect updated operational and financial provisions. The Third Amendment also includes other conforming and related changes in connection with the foregoing amendments.
On August 4, 2026, the Company completed an acquisition of Frisco, Texas-based professional services firm, CYMCOR, Inc. (“CYMCOR”), for a purchase price at closing of $30.0 million, which was funded through a combination of available cash and borrowings under the Company’s recently expanded revolving credit facility. The purchase price is subject to customary working capital adjustments. CYMCOR is a professional services firm specializing in program management, commissioning oversight, and strategic consulting for hyperscale, colocation, enterprise, and mission-critical data center clients. CYMCOR partners directly with owners to plan, coordinate, and deliver complex projects throughout the facility lifecycle, building long-term relationships through a highly technical, service-oriented approach. The acquisition expands the Company’s professional services platform and strengthens the Company’s position within the rapidly growing data center market.
At the time of this filing, the initial purchase price allocation has not been presented as the Company is still in the process of gathering and evaluating the necessary information required to complete the valuation of the acquired assets and liabilities. Accordingly, the preliminary allocation of the purchase price to the identifiable assets acquired and liabilities assumed is not yet available. The Company will provide the required disclosures, including the preliminary purchase price allocation, in a future filing once the necessary information becomes available.
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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations
The following discussion should be read in conjunction with the condensed consolidated financial statements and related notes thereto included elsewhere in this Quarterly Report on Form 10-Q. In addition to historical information, this discussion contains forward-looking statements that involve risks, uncertainties and assumptions that could cause actual results to differ materially from our management’s expectations. See “Cautionary Note Regarding Forward-Looking Statements” contained above in this Quarterly Report on Form 10-Q. The Company assumes no obligation to update any of these forward-looking statements, unless required to do so by applicable law.
Unless the context otherwise requires, a reference to a “Note” herein refers to the accompanying Notes to Condensed Consolidated Financial Statements (Unaudited) contained in Part I, "Item 1. Financial Statements."
Overview
The Company is a building systems solutions firm that designs, delivers, and maintains mechanical (heating, ventilation, and air conditioning), electrical, plumbing, and controls (“MEPC”) systems. The Company partners with building owners and operators of mission-critical facilities across healthcare, industrial and manufacturing, data centers, life sciences, higher education, and cultural and entertainment markets. As of June 30, 2026, the Company had approximately 1,600 team members across 21 offices throughout the Eastern and Midwestern regions of the United States. The Company strives to be an indispensable partner by combining its national capabilities with strong local execution and talent to deliver proactive, safe, and reliable solutions for complex facilities. Operating on a connected platform, the Company integrates engineering expertise with field execution to provide customized MEPC infrastructure solutions that address both operational and capital project needs, optimizing performance, enhancing reliability, and ensuring long-term safety.
The Company’s core market sectors consist of the following customer base with mission-critical systems:
•Healthcare, including research, acute care and inpatient hospitals for regional and national hospital groups;
•Industrial and manufacturing, including automotive, energy and general manufacturing plants;
•Data centers, including facilities composed of networked computers, storage systems and computing infrastructure that organizations use to assemble, process, store and disseminate large amounts of data;
•Life sciences, including organizations and companies whose work is centered around research and development focused on living organisms and biological systems;
•Higher education, including both public and private colleges, universities and research centers; and
•Cultural and entertainment, including entertainment facilities (including casinos) and amusement rides and parks.
The Company operates in two segments, (i) ODR, in which the Company performs owner direct projects and/or provides maintenance or service primarily on MEPC systems, and specialty contracting projects to existing buildings direct to, or assigned by, building owners or operators, and (ii) GCR, in which the Company generally manages new construction or renovation projects that involve primarily MEPC systems awarded to the Company by general contractors or construction managers. The Company’s work is primarily performed under fixed-price, modified fixed-price, and time and materials contracts over periods of typically less than two years.
Key Components of Condensed Consolidated Statements of Operations
Revenue
The Company’s revenue is primarily derived from construction-type and services contracts to deliver MEPC systems services to its customers. Such work is primarily performed under fixed-price, modified fixed-price, and time and materials contracts over periods of typically less than two years.
Construction-type contract revenue is primarily derived from fixed-price and modified fixed-price contracts. For the majority of these contracts, the Company’s performance obligations are satisfied over time because the customer controls the asset as it is created or enhanced or because the Company’s performance does not create an asset with an alternative use and the Company has an enforceable right to payment for performance completed to date. For contracts satisfied over time, the Company recognizes revenue using an input method based on costs incurred relative to total estimated costs at completion (the cost-to-cost method), which management believes depicts the transfer of control of services to the customer. The Company believes its extensive experience with MEPC systems projects, together with its internal cost estimation and review processes, enables it to reasonably estimate contract costs and mitigate the risk of cost overruns.
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With respect to service contracts, the Company’s service arrangements generally include (i) fixed-price service contracts, typically for maintenance, repair and retrofit work over a period, commonly one year, and (ii) time and materials or similar service work performed on an as-needed basis. Revenue from fixed-price service contracts is generally recognized over time on a systematic basis that depicts performance over the contract term, which is typically on a straight-line basis when services are provided evenly over the contract period. Revenue derived from time and materials and other service work is recognized when the services are performed.
The Company generally invoices customers on a monthly basis based on a schedule of values that breaks down the contract amount into discrete billing items. Costs and estimated earnings in excess of billings on uncompleted contracts are recorded as a contract asset until billable under the contract terms. Billings in excess of costs and estimated earnings on uncompleted contracts are recorded as a contract liability until the related revenue is recognizable.
Cost of Revenue
Cost of revenue primarily consists of labor, equipment, material, subcontract and other job costs in connection with fulfilling the terms of the Company’s contracts. Labor costs consist of wages plus taxes, fringe benefits and insurance. Equipment costs consist of the ownership and operating costs of company-owned assets, in addition to outside-rented equipment. If applicable, job costs include estimated contract losses to be incurred in future periods. Due to the varied nature of the Company’s services, and the risks associated therewith, contract costs as a percentage of contract revenue have historically fluctuated, and this fluctuation is expected to continue in future periods as well.
Selling, General and Administrative
Selling, general and administrative (“SG&A”) expenses consist primarily of personnel costs for the Company’s administrative, estimating, human resources, safety, information technology, legal, finance and accounting team members and executives. Also included in SG&A expenses are non-personnel costs, such as travel-related expenses, legal and other professional fees and other corporate expenses to support the growth of the Company’s business and to meet the compliance requirements associated with operating as a public company. Those costs include additional consulting, legal and audit fees, insurance costs, Board of Directors’ compensation and the costs of achieving and maintaining compliance with Section 404 of the Sarbanes-Oxley Act of 2002.
Acquisition-related Retention Expense and Contingent Consideration
As part of the acquisition of Pioneer Power, the Company implemented retention arrangements for certain key employees of the acquired business. Retention-related compensation is recognized as expense ratably over the service period, which runs through December 2027, and is contingent on continued employment.
Certain of the Company’s prior acquisitions include contingent earnout arrangements in which the Company may be required to make additional payments contingent upon the acquired businesses achieving specified performance targets over specified periods. The change in fair value of contingent consideration relates to the remeasurement of the contingent consideration arrangements resulting from the acquisitions of each of ACME, Industrial Air, Kent Island and Consolidated Mechanical. The carrying values of the ACME, Industrial Air, Kent Island and Consolidated Mechanical Earnout Payments are subject to remeasurement at fair value at each reporting date through the end of the respective earnout periods with any changes in the fair value reported as a separate component of operating income in the condensed consolidated statements of operations. See Note 8 – Fair Value Measurements in the accompanying notes to the Company’s condensed consolidated financial statements for further information on the Company’s contingent earnout arrangements.
Amortization of Intangibles
Amortization expense represents periodic non-cash charges that consist of amortization of various intangible assets primarily including customer relationships, backlog, trade name, trademarks and intellectual property and favorable leasehold interests. Each of the Jake Marshall, ACME, Industrial Air, Kent Island, Consolidated Mechanical and Pioneer Power-related intangible assets were recorded under the acquisition method of accounting at their estimated fair values at the acquisition date. See Note 5 – Goodwill and Intangible Assets in the accompanying notes to the Company’s condensed consolidated financial statements for further information on the Company’s intangible assets.
Other (Expenses) Income
Other (expenses) income consists primarily of interest expense incurred in connection with the Company’s indebtedness, gains and losses on dispositions of property and equipment, changes in the fair value of the Company’s interest rate swap, and interest income earned on overnight repurchase agreements. Deferred financing costs are amortized to interest expense using the effective interest method.
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Provision for Income Taxes
The Company is taxed as a C corporation, and its financial results include the effects of federal income taxes, which are paid at the parent level.
The Company’s provision for income taxes (including federal, state and local income taxes) is calculated based on the estimated annual effective tax rate. The Company accounts for income taxes in accordance with Accounting Standards Update (“ASC”) Topic 740 – Income Taxes, which requires an asset and liability approach. Under this approach, deferred tax assets and liabilities and income or expense are recognized for the expected future tax consequences of temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, using enacted tax rates expected to apply in the periods in which those temporary differences are expected to reverse. Changes in deferred tax assets and liabilities are included in the provision for income taxes.
Impact of Acquisitions
In order to provide a more meaningful discussion of period-over-period changes in the Company’s operating results, the Company may discuss the impact of acquisitions on revenue, gross profit, selling, general and administrative expenses, and operating income. Because acquired businesses are included in the Company’s results only from their respective acquisition dates, the size and timing of acquisitions may affect the comparability of period-over-period results. Accordingly, such comparisons may not be fully indicative of ongoing trends in the Company’s operating performance.
On July 1, 2025, the Company completed an acquisition of Woodbury, Minnesota-based mechanical contractor, Pioneer Power, Inc. (“Pioneer Power”). See Note 3 – Acquisition in the accompanying notes to the Company’s condensed consolidated financial statements for further information. Pioneer Power is a provider of industrial and institutional mechanical solutions serving healthcare, food, power/utility, oil refining and other select markets in the greater Twin Cities region of Minnesota and upper Midwest region. The acquisition further expanded the Company’s footprint in the core Midwest region and extended its reach into new geographic markets in the upper Midwest.
Operating Segments
The Company manages and measures the performance of its business in two operating segments: ODR and GCR. Segment information is prepared on the same basis that is used by the Company’s Chief Operating Decision Maker (“CODM”) to assess performance and allocate resources. The Company's CODM is comprised of its President and Chief Executive Officer and Executive Vice President and Chief Financial Officer. The Company’s CODM evaluates segment performance and makes resource allocation decisions primarily based on gross profit. Gross profit is a key measure used by the CODM in the annual budgeting and forecasting process, as well as in periodic reviews of actual operating results compared to planned performance. The CODM uses the Company's gross profit measure to assess the operating performance of its reportable segments, establish business priorities, and make decisions regarding the allocation of capital and other resources among those segments.
In accordance with ASC Topic 280 – Segment Reporting, the Company has elected to aggregate all of the ODR work performed at its branches into one ODR reportable segment and all of the GCR work performed at its branches into one GCR reportable segment. All transactions between segments are eliminated in consolidation.
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Comparison of Results of Operations for the three months ended June 30, 2026 and 2025
The following table presents operating results for the three months ended June 30, 2026 and 2025 in dollars and expressed as a percentage of total revenue (except as indicated below), as compared below:

|  | Three Months Ended June 30, |
|  | 2026 |  | 2025 |
(in thousands except for percentages) |  |  |  |  |  |  |  |  |
Statement of Operations Data: |  |  |  |  |  |  |  |  |
Revenue: |  |  |  |  |  |  |  |  |
ODR |  | $ | 128,414 |  |  | 74.0 | % |  | $ | 108,948 |  |  | 76.6 | % |
GCR |  | 45,043 |  |  | 26.0 | % |  | 33,293 |  |  | 23.4 | % |
Total revenue |  | 173,457 |  |  | 100.0 | % |  | 142,241 |  |  | 100.0 | % |
Cost of revenue: |  |  |  |  |  |  |  |  |
ODR |  | 97,654 |  |  | 76.0 | % | (1) | 77,359 |  |  | 71.0 | % | (1)
GCR |  | 38,510 |  |  | 85.5 | % | (2) | 25,056 |  |  | 75.3 | % | (2)
Total cost of revenue |  | 136,164 |  |  | 78.5 | % |  | 102,415 |  |  | 72.0 | % |
Gross profit: |  |  |  |  |  |  |  |  |
ODR |  | 30,760 |  |  | 24.0 | % | (1) | 31,589 |  |  | 29.0 | % | (1)
GCR |  | 6,533 |  |  | 14.5 | % | (2) | 8,237 |  |  | 24.7 | % | (2)
Total gross profit |  | 37,293 |  |  | 21.5 | % |  | 39,826 |  |  | 28.0 | % |
Selling, general and administrative(3) |  | 28,116 |  |  | 16.2 | % |  | 26,632 |  |  | 18.7 | % |
Acquisition-related retention expense and contingent consideration |  | 230 |  |  | 0.1 | % |  | 795 |  |  | 0.6 | % |
Amortization of intangibles |  | 1,695 |  |  | 1.0 | % |  | 1,757 |  |  | 1.2 | % |
Total operating income |  | 7,252 |  |  | 4.2 | % |  | 10,642 |  |  | 7.5 | % |
Other (expense) income |  | (669) |  |  | (0.4) | % |  | 122 |  |  | 0.1 | % |
Total income before income taxes |  | 6,583 |  |  | 3.8 | % |  | 10,764 |  |  | 7.6 | % |
Income tax expense |  | 1,836 |  |  | 1.1 | % |  | 3,002 |  |  | 2.1 | % |
Net income |  | $ | 4,747 |  |  | 2.7 | % |  | $ | 7,762 |  |  | 5.5 | % |

(1)As a percentage of ODR revenue.
(2)As a percentage of GCR revenue.
(3)Included within selling, general and administrative expenses was $2.1 million and $1.6 million of non-cash stock-based compensation expense for the three months ended June 30, 2026 and 2025, respectively.
Revenue

| Three Months Ended June 30,
| 2026 |  | 2025 |  | Increase/(Decrease)
(in thousands except for percentages) |  |  |  |  |  |  |
Revenue: |  |  |  |  |  |  |
ODR | $ | 128,414 |  |  | $ | 108,948 |  |  | $ | 19,466 |  |  | 17.9 | %
GCR | 45,043 |  |  | 33,293 |  |  | 11,750 |  |  | 35.3 | %
Total revenue | $ | 173,457 |  |  | $ | 142,241 |  |  | $ | 31,216 |  |  | 21.9 | %

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•Total revenue increased by $31.2 million, or 21.9%, primarily due to the acquisition of Pioneer Power, which contributed $30.9 million of revenue from acquired operations during the three months ended June 30, 2026. Acquisition-related revenue represents revenue generated by an acquired business during the twelve-month period following its acquisition date. Thereafter, the results of an acquired business are included within the Company’s organic operations, and period-over-period changes are discussed on a combined basis.
Revenue generated from the Company’s organic operations increased slightly by $0.3 million, or 0.2%, for the three months ended June 30, 2026 compared to the three months ended June 30, 2025. The Company expects the timing of project commencements and execution within its existing backlog, together with currently expected future bookings, to support organic revenue growth during the remainder of 2026.
•ODR revenue increased by $19.5 million, or 17.9%, primarily due to the acquisition of Pioneer Power, which contributed approximately $23.2 million in ODR revenue in the three months ended June 30, 2026. The Company’s ODR organic revenue decreased approximately $3.7 million.
•GCR revenue increased by $11.8 million, or 35.3%, primarily due to an incremental increase in GCR acquisition-related revenue of approximately $7.8 million from the Pioneer Power acquisition, as well as an increase in GCR organic revenue of $4.0 million.
Gross Profit

| Three Months Ended June 30,
| 2026 |  | 2025 |  | Increase/(Decrease)
(in thousands except for percentages) |  |  |  |  |  |  |
Gross profit: |  |  |  |  |  |  |
ODR | $ | 30,760 |  |  | $ | 31,589 |  |  | $ | (829) |  |  | (2.6) | %
GCR | 6,533 |  |  | 8,237 |  |  | (1,704) |  |  | (20.7) | %
Total gross profit | $ | 37,293 |  |  | $ | 39,826 |  |  | $ | (2,533) |  |  | (6.4) | %
Total gross profit as a percentage of total revenue | 21.5 | % |  | 28.0 | % |  |  |  |

•Total gross profit decreased by $2.5 million primarily due to lower gross margin percentages in both our ODR and GCR segments. The decrease in segment gross margin percentages was primarily driven by the lower margin profile of Pioneer Power. Pioneer Power continues to perform in line with the Company’s integration expectations and management expects gross margins to improve as 2026 progresses. Operational and pricing improvement initiatives are underway to enhance profitability at Pioneer Power, with the goal of bringing gross margins in line with the Company’s historical average over the next two to three years.
•Gross profit margin was also negatively impacted by lower net project write-ups compared to the prior year period and competition for skilled labor and materials associated with construction activity in data center markets. The Company expects gross profit margins to improve during the remainder of 2026; however, margins are expected to remain below the levels achieved during the comparable periods of 2025.
The Company recorded revisions in its contract estimates for certain ODR and GCR projects; however, the Company did not record any material gross profit write-ups or write-downs that had a net gross profit impact of $1.0 million or more during the three months ended June 30, 2026 and 2025.
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Selling, General and Administrative (“SG&A”)

| Three Months Ended June 30,
| 2026 |  | 2025 |  | Increase/(Decrease)
(in thousands except for percentages) |  |  |  |  |  |  |
Selling, general and administrative | $ | 28,116 |  |  | $ | 26,632 |  |  | $ | 1,484 |  |  | 5.6 | %
Total selling, general and administrative as a percentage of total revenue | 16.2 | % |  | 18.7 | % |  |  |  |

•SG&A expense increased $1.5 million, or 5.6%, primarily due to $0.7 million of SG&A expenses associated with the Pioneer Power acquisition. Acquisition-related SG&A represents SG&A expenses incurred by an acquired business during the twelve-month period following its respective acquisition date. After such period, the results of acquired businesses are included within the Company’s organic operations, and period-over-period changes are discussed on a combined basis. The increase in organic SG&A expense was approximately $0.8 million, primarily due to a $0.6 million increase in total stock-based compensation and payroll related expenses. As a percentage of revenue, SG&A expense decreased to 16.2% from 18.7% in the prior-year period.
Acquisition-Related Retention Expense and Contingent Consideration
Acquisition-related retention and contingent consideration expenses were $0.2 million and $0.8 million for the three months ended June 30, 2026 and 2025, respectively. For the three months ended June 30, 2026, these expenses included approximately $0.1 million of acquisition-related retention expense associated with the Pioneer Power acquisition. In connection with the acquisition, the Company entered into retention agreements with certain key employees of the acquired business. Retention compensation expense is recognized ratably over the requisite service period, which extends through December 2027, and is contingent upon continued employment.
The Company also recognized a $0.1 million increase in the fair value of contingent consideration during the three months ended June 30, 2026, compared to a $0.8 million increase during the three months ended June 30, 2025. Changes in the fair value of contingent consideration represent non-cash expenses and were primarily attributable to updates in the estimated probability of achieving the gross profit targets underlying the related earnout arrangements.
See Note 8 – Fair Value Measurements in the accompanying notes to the Company’s condensed consolidated financial statements for further information on the Company’s earnout arrangements.
Amortization of Intangibles

| Three Months Ended June 30,
| 2026 |  | 2025 |  | Increase/(Decrease)
(in thousands except for percentages) |  |  |  |  |  |  |
Amortization of intangibles | $ | 1,695 |  |  | $ | 1,757 |  |  | $ | (62) |  |  | (3.5) | %

•Amortization of intangibles decreased period-over-period primarily due to certain finite-lived intangible assets becoming fully amortized. This decrease was partially offset by incremental amortization expense associated with intangible assets recognized in connection with the Pioneer Power acquisition.
See Note 5 – Goodwill and Intangibles in the accompanying notes to the Company’s condensed consolidated financial statements for further information on the Company’s intangible assets.
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Other (Expenses) Income

|  | Three Months Ended June 30,
|  | 2026 |  | 2025 |  | Change
(in thousands except for percentages) |  |  |  |  |  |  |  |
Other (expenses) income: |  |  |  |  |  |  |  |
Interest expense |  | $ | (773) |  |  | $ | (563) |  |  | $ | (210) |  |  | 37.3 | %
Interest income |  | 1 |  |  | 334 |  |  | (333) |  |  | (99.7) | %
Gain on disposition of property and equipment |  | 81 |  |  | 407 |  |  | (326) |  |  | (80.1) | %
Gain (loss) on change in fair value of interest rate swap |  | 22 |  |  | (56) |  |  | 78 |  |  | 139.3 | %
Total other (expenses) income |  | $ | (669) |  |  | $ | 122 |  |  | $ | (791) |  |  | (648.4) | %

•Interest expense increased $0.2 million primarily due to higher average borrowings under the Company’s revolving credit facility and increased financing costs associated with a larger vehicle fleet compared to the prior-year period.
•Interest income decreased $0.3 million primarily due to lower average cash and cash equivalent balances and reduced yields on invested balances compared to the prior-year period.
•Gain on disposition of property and equipment decreased $0.3 million primarily due to various gains recognized in both periods, none of which were individually material.
Income Taxes
The Company recorded an income tax provision of $1.8 million for the three months ended June 30, 2026 compared to $3.0 million for the three months ended June 30, 2025. The effective tax rate was 27.9% for both the three months ended June 30, 2026 and 2025, respectively. The difference between the U.S. federal statutory tax rate and the Company’s effective tax rate period-over-period was primarily due to state income taxes, tax credits, other permanent adjustments and discrete tax items. See Note 10 – Income Taxes in the accompanying notes to the Company’s condensed consolidated financial statements for additional information.
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Comparison of Results of Operations for the six months ended June 30, 2026 and 2025
The following table presents operating results for the six months ended June 30, 2026 and 2025 in dollars and expressed as a percentage of total revenue (except as indicated below), as compared below:

|  | Six Months Ended June 30, |
|  | 2026 |  | 2025 |
(in thousands except for percentages) |  |  |  |  |  |  |  |  |
Statement of Operations Data: |  |  |  |  |  |  |  |  |
Revenue: |  |  |  |  |  |  |  |  |
ODR |  | $ | 228,225 |  |  | 73.1 | % |  | $ | 199,341 |  |  | 72.4 | % |
GCR |  | 84,091 |  |  | 26.9 | % |  | 76,008 |  |  | 27.6 | % |
Total revenue |  | 312,316 |  |  | 100.0 | % |  | 275,349 |  |  | 100.0 | % |
Cost of revenue: |  |  |  |  |  |  |  |  |
ODR |  | 174,481 |  |  | 76.5 | % | (1) | 141,591 |  |  | 71.0 | % | (1)
GCR |  | 69,372 |  |  | 82.5 | % | (2) | 57,213 |  |  | 75.3 | % | (2)
Total cost of revenue |  | 243,853 |  |  | 78.1 | % |  | 198,804 |  |  | 72.2 | % |
Gross profit: |  |  |  |  |  |  |  |  |
ODR |  | 53,744 |  |  | 23.5 | % | (1) | 57,750 |  |  | 29.0 | % | (1)
GCR |  | 14,719 |  |  | 17.5 | % | (2) | 18,795 |  |  | 24.7 | % | (2)
Total gross profit |  | 68,463 |  |  | 21.9 | % |  | 76,545 |  |  | 27.8 | % |
Selling, general and administrative(3) |  | 56,230 |  |  | 18.0 | % |  | 53,150 |  |  | 19.3 | % |
Acquisition-related retention expense and contingent consideration |  | 379 |  |  | 0.1 | % |  | 1,222 |  |  | 0.4 | % |
Amortization of intangibles |  | 3,469 |  |  | 1.1 | % |  | 3,620 |  |  | 1.3 | % |
Total operating income |  | 8,385 |  |  | 2.7 | % |  | 18,553 |  |  | 6.7 | % |
Other (expense) income |  | (1,079) |  |  | (0.3) | % |  | 202 |  |  | 0.1 | % |
Total income before income taxes |  | 7,306 |  |  | 2.3 | % |  | 18,755 |  |  | 6.8 | % |
Income tax (benefit) expense |  | (1,821) |  |  | (0.6) | % |  | 779 |  |  | 0.3 | % |
Net income |  | $ | 9,127 |  |  | 2.9 | % |  | $ | 17,976 |  |  | 6.5 | % |

(1)As a percentage of ODR revenue.
(2)As a percentage of GCR revenue.
(3)Included within selling, general and administrative expenses was $3.9 million and $3.2 million of non-cash stock-based compensation expense for the six months ended June 30, 2026 and 2025, respectively.
Revenue

| Six Months Ended June 30,
| 2026 |  | 2025 |  | Increase/(Decrease)
(in thousands except for percentages) |  |  |  |  |  |  |
Revenue: |  |  |  |  |  |  |
ODR | $ | 228,225 |  |  | $ | 199,341 |  |  | $ | 28,884 |  |  | 14.5 | %
GCR | 84,091 |  |  | 76,008 |  |  | 8,083 |  |  | 10.6 | %
Total revenue | $ | 312,316 |  |  | $ | 275,349 |  |  | $ | 36,967 |  |  | 13.4 | %

•Total revenue increased by $37.0 million, or 13.4%, primarily due to the acquisition of Pioneer Power, which contributed $54.5 million of revenue from acquired operations during the six months ended June 30, 2026.
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Acquisition-related revenue represents revenue generated by an acquired business during the twelve-month period following its acquisition date. Thereafter, the results of an acquired business are included within the Company’s organic operations, and period-over-period changes are discussed on a combined basis.
This increase was partially offset by a $17.5 million decline in revenue from the Company’s organic operations for the six months ended June 30, 2026. The Company expects the timing of project commencements and execution within its existing backlog, together with currently expected future bookings, to support organic revenue growth during the remainder of 2026.
•ODR revenue increased by $28.9 million, or 14.5%, primarily due to the acquisition of Pioneer Power, which contributed approximately $37.5 million in ODR revenue in the current period. The Company’s organic ODR operations decreased approximately $8.6 million.
•GCR revenue increased by $8.1 million, or 10.6% primarily due to an incremental increase in GCR acquisition-related revenue of approximately $17.0 million from the Pioneer Power acquisition. This increase was partially offset by lower GCR organic revenue of $8.9 million.
Gross Profit

| Six Months Ended June 30,
| 2026 |  | 2025 |  | Increase/(Decrease)
(in thousands except for percentages) |  |  |  |  |  |  |
Gross profit: |  |  |  |  |  |  |
ODR | $ | 53,744 |  | $ | 57,750 |  | $ | (4,006) |  |  | (6.9) | %
GCR | 14,719 |  | 18,795 |  | (4,076) |  |  | (21.7) | %
Total gross profit | $ | 68,463 |  | $ | 76,545 |  | $ | (8,082) |  |  | (10.6) | %
Total gross profit as a percentage of total revenue | 21.9 | % |  | 27.8 | % |  |  |  |

•Total gross profit decreased by $8.1 million, or 10.6%, primarily due to lower gross margin percentages in both our ODR and GCR segments. The decrease in segment gross margin percentages was primarily driven by the lower margin profile of Pioneer Power. Pioneer Power continues to perform in line with the Company’s integration expectations and management expects gross margins to improve as 2026 progresses. Operational and pricing improvement initiatives are underway to enhance profitability at Pioneer Power, with the goal of bringing gross margins in line with the Company’s historical average over the next two to three years.
•Gross profit margin was also negatively impacted by lower net project write-ups compared to the prior year period and competition for skilled labor and materials associated with construction activity in data center markets. The Company expects gross profit margins to improve during the remainder of 2026; however, margins are expected to remain below the levels achieved during the comparable periods of 2025.
The Company recorded revisions in its contract estimates for certain ODR and GCR projects; however, the Company did not record any material gross profit write-ups or write-downs that had a net gross profit impact of $1.0 million or more during the six months ended June 30, 2026 and 2025.
Selling, General and Administrative

| Six Months Ended June 30,
| 2026 |  | 2025 |  | Increase/(Decrease)
(in thousands except for percentages) |  |  |  |  |  |  |
Selling, general and administrative | $ | 56,230 |  | $ | 53,150 |  | $ | 3,080 |  |  | 5.8 | %
Total selling, general and administrative as a percentage of total revenue | 18.0 | % |  | 19.3 | % |  |  |  |

•SG&A expense increased $3.1 million, or 5.8%, due to $1.3 million of SG&A expenses associated with the Pioneer Power acquisition. Acquisition-related SG&A represents SG&A expenses incurred by an acquired business during the twelve-month period following its respective acquisition date. After such period, the results of acquired businesses are
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included within the Company’s organic operations, and period-over-period changes are discussed on a combined basis. The increase in organic SG&A expense was approximately $1.8 million, primarily due to a $1.8 million increase in payroll related expenses and a $0.7 million increase in stock-based compensation expense, partially offset by a $0.7 million decrease in professional services related expenses. As a percentage of revenue, SG&A expense decreased to 18.0% from 19.3% in the prior-year period.
Acquisition-Related Retention Expense and Contingent Consideration
Acquisition-related retention and contingent consideration expenses were $0.4 million and $1.2 million for the six months ended June 30, 2026 and 2025, respectively. For the six months ended June 30, 2026, these expenses included approximately $0.2 million of acquisition-related retention expense associated with the Pioneer Power acquisition. In connection with the acquisition, the Company entered into retention agreements with certain key employees of the acquired business. Retention compensation expense is recognized ratably over the requisite service period, which extends through December 2027, and is contingent upon continued employment.
In addition, the Company recognized a $0.2 million increase in the fair value of contingent consideration during the six months ended June 30, 2026, compared to a $1.2 million increase during the six months ended June 30, 2025. Changes in the fair value of contingent consideration represent non-cash expenses and were primarily attributable to updates in the estimated probability of achieving the gross profit targets underlying the related earnout arrangements.
See Note 8 – Fair Value Measurements in the accompanying notes to the Company’s condensed consolidated financial statements for further information on the Company’s earnout arrangements.
Amortization of Intangibles

| Six Months Ended June 30,
| 2026 |  | 2025 |  | Increase/(Decrease)
(in thousands except for percentages) |  |  |  |  |  |  |
Amortization of intangibles | $ | 3,469 |  |  | $ | 3,620 |  |  | $ | (151) |  |  | (4.2) | %

•Amortization of intangibles decreased period-over-period primarily due to certain finite-lived intangible assets becoming fully amortized. This decrease was partially offset by incremental amortization expense associated with intangible assets recognized in connection with the Pioneer Power acquisition.
See Note 5 – Goodwill and Intangibles in the accompanying notes to the Company’s condensed consolidated financial statements for further information on the Company’s intangible assets.
Other (Expenses) Income

|  | Six Months Ended June 30,
|  | 2026 |  | 2025 |  | Change
(in thousands except for percentages) |  |  |  |  |  |  |  |
Other (expenses) income: |  |  |  |  |  |  |  |
Interest expense |  | $ | (1,474) |  |  | $ | (1,089) |  |  | $ | (385) |  |  | 35.4 | %
Interest income |  | 16 |  |  | 704 |  |  | (688) |  |  | (97.7) | %
Gain on disposition of property and equipment |  | 319 |  |  | 740 |  |  | (421) |  |  | (56.9) | %
Gain (loss) on change in fair value of interest rate swap |  | 60 |  |  | (153) |  |  | 213 |  |  | 139.2 | %
Total other (expenses) income |  | $ | (1,079) |  |  | $ | 202 |  |  | $ | (1,281) |  |  | (634.2) | %

•Interest expense increased $0.4 million in the period-to-period comparison primarily due to higher average borrowings under the Company’s revolving credit facility and increased financing costs associated with a larger vehicle fleet compared to the prior-year period.
•Interest income decreased $0.7 million primarily due to lower average cash and cash equivalent balances and reduced yields on invested balances compared to the prior-year period.
•Gain on disposition of property and equipment decreased $0.4 million primarily due to various gains recognized in both periods, none of which were individually material.
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Income Taxes
The Company recorded an income tax benefit of $1.8 million for the six months ended June 30, 2026 compared to an income tax provision of $0.8 million for the six months ended June 30, 2025. The effective tax rate was (24.9)% and 4.2% for the six months ended June 30, 2026 and 2025, respectively. The Company’s effective tax rate differed from the U.S. federal statutory tax rate in each period primarily due to state income taxes, federal tax credits, other permanent adjustments and discrete excess tax benefits related to RSU vestings recognized during the first quarter of each year. See Note 10 – Income Taxes in the accompanying notes to the Company’s condensed consolidated financial statements for additional information.
ODR and GCR Backlog Information
The Company refers to its estimated revenue on uncompleted contracts, including the amount of revenue on contracts for which work has not begun, less the revenue it had recognized under such contracts, as “backlog.” Backlog includes unexercised contract options. The Company’s backlog includes projects that have a written award, a letter of intent, a notice to proceed or an agreed upon work order to perform work on mutually accepted terms and conditions. Additionally, the difference between the Company’s backlog and remaining performance obligations is due to the portion of unexercised contract options that are excluded, under certain contract types, from the Company’s remaining performance obligations as these contracts can be canceled for convenience at any time by the Company or the customer without considerable cost incurred by the customer. While backlog provides a measure of work expected to be performed in future periods, it is not necessarily a reliable indicator of future revenue or overall performance of the Company. A substantial portion of the Company’s contracts, particularly within its ODR operations, are short-cycle in nature and may be awarded and substantially completed within a short period following award. These projects typically have short lead times and rapid burn rates and, as a result, are generally not included in reported backlog. Consequently, fluctuations in reported backlog may not correlate with changes in overall market demand, revenue generation, or operational performance. Additional information related to the Company’s remaining performance obligations is provided in Note 4 – Revenue from Contracts with Customers in the accompanying notes to its condensed consolidated financial statements.
The Company’s ODR backlog was $283.6 million and $255.8 million as of June 30, 2026 and December 31, 2025, respectively. These amounts reflect unrecognized revenue expected to be recognized over the remaining terms of its construction-type and service contracts. Based on historical trends, the Company currently estimates that 68% of its ODR backlog as of June 30, 2026 will be recognized as revenue over the remainder of 2026. The Company’s ODR backlog increased due to its continued focus on the accelerated growth of its ODR business.
The Company’s GCR backlog was $200.1 million and $141.8 million as of June 30, 2026 and December 31, 2025, respectively. Projects are brought into backlog once the Company has been provided a written confirmation of award and the contract value has been established. At any point in time, the Company has a substantial volume of projects that are specifically identified and advanced in negotiations and/or documentation, however those projects are not booked as backlog until the Company has received written confirmation from the owner or the general contractor / construction manager of their intention to award the contract and they have directed the Company to begin engineering, designing, incurring construction labor costs or procuring needed equipment and material. The Company’s GCR projects tend to be built over a 12- to 24-month schedule depending upon scope and complexity. Most major projects have a preconstruction planning phase, which may require months of planning before actual construction commences. The Company is occasionally employed to deliver a “fast-track” project, where construction commences as the preconstruction planning work continues. As work on the Company’s projects progress, it increases or decreases backlog to take into account its estimate of the effects of changes in estimated quantities, changes in conditions, change orders and other variations from initially anticipated contract revenue, and the percentage of completion of the Company’s work on the projects. Based on historical trends, the Company currently estimates that 57% of its GCR backlog as of June 30, 2026 will be recognized as revenue over the remainder of 2026. Additionally, the reduction in GCR backlog has been intentional as the Company focuses on higher margin projects than it has done historically, as well as its focus on smaller, higher margin owner direct projects.
Market Update
The Company continuously monitors evolving macroeconomic conditions and heightened geopolitical risks. Economic and trade policy uncertainty has remained elevated in 2026. Trade tensions and changes in trade policy, including tariffs, global conflicts, labor disruptions, and evolving regulations may continue to contribute to inflationary pressures, supply chain disruptions, and pricing and lead-time volatility for certain materials and equipment. The Company continues to work closely with suppliers and subcontractors to mitigate potential shortages and manage supply and pricing volatility. The Company anticipates continued uncertainty with respect to inflation and other macroeconomic trends for the foreseeable future.
The Company continues to evaluate the extent to which these conditions may impact its business, financial condition, and results of operations. During periods of economic uncertainty, customers may delay or cancel large capital projects, including
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new construction or significant mechanical system upgrades. At the same time, demand for the Company’s service, maintenance, and repair offerings may remain stable or increase as customers prioritize maintaining existing systems over capital-intensive replacements. Economic uncertainty may also result in increased competition and pricing pressure, which could adversely affect revenue and margins. The Company believes its diversified service offerings and customer base help reduce exposure to market volatility. While the Company believes its remaining performance obligations generally represent firm commitments, project timing may shift due to customer scheduling decisions or the availability and timing of critical equipment. Prolonged delays could result in customers seeking to defer, modify, or terminate existing or pending agreements. Any of these events could have a material adverse effect on the Company’s business, financial condition, and results of operations.
The Company believes that certain of the markets in which it sources materials, equipment and, in certain instances, subcontracted services have experienced consolidation during 2026 and may continue to consolidate. Given this trend, the Company continues to actively manage its supplier and subcontractor relationships with the ultimate view and goal of providing high-quality services to its customers in an effort to be a leading building systems solutions firm.
Notwithstanding those active managerial efforts with that goal in mind, the Company understands that if it is not successful in these managerial efforts that increased consolidation among suppliers and/or subcontractors could over time impair its ability to deliver services efficiently, competitively price its offerings, or meet customer expectations.
Strategy
The Company is focused on creating value for building owners by developing long-term relationships and becoming an indispensable partner to building owners with mission-critical systems. The strategic initiatives undertaken over the past several years have strengthened the Company’s operating platform and positioned it to shift its focus from business transformation and revenue mix improvement to disciplined growth.
Building on this foundation, the Company intends to expand its business while generating strong cash flow, enhancing the durability of its earnings and delivering attractive returns over time. The Company’s strategy is centered on building enterprise scale through vertical market diversification, expanding its geographic reach and leveraging an integrated operating model designed to strengthen its competitive advantages as the business grows. For information on the Company’s prior strategic initiatives, see Part I, Item 1, “Business,” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025.
Seasonality, Cyclicality and Quarterly Trends
Severe weather can impact the Company’s operations. In the northern climates where it operates, and to a lesser extent the southern climates as well, severe winters can slow the Company’s productivity on projects, which shifts revenue and gross profit recognition to a later period. The Company’s maintenance operations may also be impacted by mild or severe weather. Mild weather tends to reduce demand for its maintenance services, whereas severe weather may increase the demand for its maintenance and time and materials services. The Company’s operations also experience cyclicality, as the Company tends to see customer budgets being allocated in the first quarter of the year and an increased level of maintenance and capital project execution during the third and fourth calendar quarters of each year.
Effect of Inflation and Tariffs
The prices of key inputs used in the Company’s projects and service operations, including steel, pipe, copper, and certain equipment and components, remain subject to volatility, including increases driven by inflation, tariffs, supply constraints, and price escalation. These factors can, at times, be material to the Company’s results of operations and financial condition, particularly on fixed-price projects and where equipment lead times extend beyond procurement windows. During the six months ended June 30, 2026, the Company continued to experience selective pricing pressure and extended lead times for certain materials and equipment, although such impacts were not material to its consolidated results of operations or financial condition.
Where appropriate, the Company seeks to mitigate these impacts by (i) incorporating cost escalation assumptions and/or escalation provisions into bids and proposals, (ii) limiting bid acceptance periods, (iii) procuring materials and equipment earlier in the project lifecycle, including through fixed-price purchase orders where feasible, and (iv) negotiating with suppliers and subcontractors to manage pricing and delivery terms. Despite these efforts, sustained inflationary pressures, supply chain disruptions, labor shortages, or rapid changes in tariff regimes could increase costs, reduce margins, and/or require the Company to defer or re-sequence projects, which could adversely affect the pace at which backlog converts to revenue.
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The Company continues to monitor developments in U.S. trade policy, including tariffs imposed under Section 232 of the Trade Expansion Act of 1962 on imported steel, aluminum, and certain derivative products, as well as the potential for additional duties, exemptions, or retaliatory measures. These actions could increase costs, impact the availability and lead times of certain materials and components, and alter competitive dynamics. In the Company’s ODR segment, which generally operates on shorter sales cycles, the Company can often adjust pricing to reflect cost increases; however, it may still be unable to recover all cost increases in a timely manner, particularly for fixed-price contracts and long-lead equipment orders. Accordingly, the Company cannot predict the ultimate impact of tariffs or other trade restrictions on its business, results of operations, or financial condition.
Liquidity and Capital Resources
Cash Flows
The Company's liquidity needs relate primarily to the provision of working capital (defined as current assets less current liabilities) to support operations, funding of capital expenditures, and investment in strategic opportunities. Historically, liquidity has been provided by operating activities and borrowings from commercial banks and institutional lenders.
The following table presents summary cash flow information for the periods indicated:

|  | Six Months Ended June 30,
|  | 2026 |  | 2025
(in thousands) |  |  |  |
Net cash provided by (used in): |  |  |  |
Operating activities |  | $ | 10,928 |  |  | $ | 4,242 |
Investing activities |  | (665) |  |  | (2,152) |
Financing activities |  | (4,079) |  |  | (8,080) |
Net increase (decrease) in cash, cash equivalents and restricted cash |  | $ | 6,184 |  |  | $ | (5,990) |
Noncash investing and financing transactions: |  |  |  |
Kent Island Transaction, measurement period adjustment |  | $ | — |  |  | $ | (94) |
Right of use assets obtained in exchange for new operating lease liabilities |  | 710 |  |  | 1,676 |
Right of use assets obtained in exchange for new finance lease liabilities |  | 177 |  |  | 7,933 |
Right of use assets disposed or adjusted modifying finance lease liabilities |  | 20 |  |  | — |
Interest paid |  | 1,453 |  |  | 1,058 |
Cash paid for income taxes |  | $ | 3,353 |  |  | $ | 4,023 |

The Company's cash flows are primarily impacted period to period by fluctuations in working capital. Factors such as the Company's contract mix, commercial terms, days sales outstanding (“DSO”) and delays in the start of projects may impact its working capital. In line with industry practice, the Company accumulates costs during a given month and then bills those costs in the current month for many of its contracts. While labor costs associated with these contracts are paid weekly and salary costs associated with the contracts are paid bi-monthly, certain subcontractor costs are generally not paid until the Company receives payment from its customers (contractual “pay-if-paid” terms). The Company has not historically experienced a large volume of write-offs related to its receivables and contract assets. The Company regularly assesses its receivables for collectability and provides allowances for credit losses where appropriate. The Company believes that its reserves for its expected credit losses are appropriate as of June 30, 2026 and December 31, 2025, but adverse changes in the economic environment may impact certain of its customers’ ability to access capital and compensate the Company for its services, as well as impact project activity for the foreseeable future.
The Company's existing current backlog is projected to support a portion of forecasted revenue for one year from the date of the financial statement issuance. In addition to the Company's backlog, the Company has a substantial amount of contracts with short lead times that book-and-bill within the same reporting period and are not included in backlog. The Company's current cash balance, together with the cash it expects to generate from future operations along with borrowings available under its credit facility, are expected to be sufficient to finance its short- and long-term capital requirements (or meet working capital requirements) for at least the next twelve months. In addition to the future operating cash flows of the Company, along with its existing borrowing availability and access to financial markets, the Company currently believes it will be able to meet any working capital and future operating requirements, and capital investment forecast opportunities for at least the next twelve months.
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The following table represents the Company's summarized working capital information:

(in thousands, except ratios) |  | June 30, 2026 |  | December 31, 2025
Current assets |  | $ | 223,148 |  |  | $ | 195,049 |
Current liabilities |  | (150,246) |  |  | (135,086) |
Net working capital |  | $ | 72,902 |  |  | $ | 59,963 |
Current ratio(1) |  | 1.49 |  |  | 1.44 |

(1) Current ratio is calculated by dividing current assets by current liabilities.
As discussed above and in Note 6 – Debt in the accompanying notes to the Company’s condensed consolidated financial statements, as of June 30, 2026, the Company was in compliance with all financial maintenance covenants as required by its credit facility.
Cash Flows Provided by Operating Activities
The following is a summary of the significant sources (uses) of cash from operating activities:

| Six Months Ended June 30,
(in thousands) | 2026 |  | 2025 |  | Cash Inflow (outflow)
Cash flows from operating activities: |  |  |  |  |
Net income | $ | 9,127 |  |  | $ | 17,976 |  |  | $ | (8,849) |
Non-cash operating activities(1) | 13,303 |  |  | 14,146 |  |  | (843) |
Changes in operating assets and liabilities: |  |  |  |  |
Accounts receivable | (16,347) |  |  | 6,455 |  |  | (22,802) |
Contract assets and contract liabilities, net(2) | 15,913 |  |  | (10,775) |  |  | 26,688 |
Other current assets | (7,471) |  |  | (1,040) |  |  | (6,431) |
Accounts payable, including retainage | 6,123 |  |  | (5,428) |  |  | 11,551 |
Prepaid income taxes | (2,201) |  |  | (1,916) |  |  | (285) |
Accrued taxes payable | (1,152) |  |  | (1,470) |  |  | 318 |
Operating lease liabilities | (2,134) |  |  | (1,968) |  |  | (166) |
Accrued expenses and other current liabilities | (397) |  |  | (10,890) |  |  | 10,493 |
Payment of contingent consideration liability in excess of acquisition-date fair value | (3,404) |  |  | (711) |  |  | (2,693) |
Other long-term liabilities | (432) |  |  | (137) |  |  | (295) |
Cash used in working capital | (11,502) |  |  | (27,880) |  |  | 16,378 |
Net cash provided by operating activities | $ | 10,928 |  |  | $ | 4,242 |  |  | $ | 6,686 |

(1)Represents non-cash activity associated with depreciation and amortization, provision for credit losses, non-cash stock-based compensation expense, operating lease expense, amortization of debt issuance costs, deferred income tax provision, gain or loss on sale of property and equipment, acquisition-related retention expense and contingent consideration and changes in the fair value of the Company's interest rate swap.
(2)The Company refined the presentation of contract-related balances within operating activities of the consolidated statements of cash flows. Changes in contract assets and contract liabilities are now presented on a net basis, rather than as separate line items, to align with the Company’s presentation of net contract positions. Prior-period amounts have been conformed for comparability, where applicable. This presentation change did not impact net cash provided by operating activities.
During the six months ended June 30, 2026, the Company generated $10.9 million in cash from its operating activities, which consisted of non-cash adjustments of $13.3 million and net income of $9.1 million, partly offset by cash used in working capital of $11.5 million. During the six months ended June 30, 2025, the Company generated $4.2 million from its operating activities, which consisted of net income of $18.0 million and certain non-cash adjustments of $14.1 million, partly offset by cash used in working capital of $27.9 million.
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The change in operating cash flows during the six months ended June 30, 2026 compared to the six months ended June 30, 2025 was primarily attributable to a $26.7 million favorable change in contract assets and contract liabilities, net, reflecting the timing of billings, collections and other working capital activity. In addition, there was a $11.6 million favorable change in accounts payable, including retainage, and a $10.5 million favorable change in accrued expenses and other current liabilities due to the timing of payments. These cash inflows were partially offset by a $22.8 million unfavorable change in accounts receivable due to the timing of cash collections, an $8.8 million decrease in net income and a $6.4 million unfavorable change in other current assets.
Cash Flows Used in Investing Activities
Cash flows used in investing activities were $0.7 million and $2.2 million for the six months ended June 30, 2026 and 2025, respectively. Cash used in investing activities for the six months ended June 30, 2026 included a cash outflow of $1.0 million related to the purchase of property and equipment, partially offset by $0.4 million in proceeds from the sale of property and equipment. Cash used in investing activities for the six months ended June 30, 2025 included a cash outflow of $3.1 million related to the purchase of property and equipment, which was primarily associated with the purchase of certain rental equipment to expand customer offerings. These cash outflows were partially offset by $0.9 million in proceeds from the sale of property and equipment.
Aside from the rental equipment purchases in 2025, the majority of the Company's cash used for investing activities in both periods was for capital additions pertaining to tools and equipment, computer software and hardware purchases, office furniture and office related leasehold improvements.
Cash Flows Used in Financing Activities
Cash flows used in financing activities were $4.1 million for the six months ended June 30, 2026 compared to $8.1 million for the six months ended June 30, 2025. During the six months ended June 30, 2026, the Company repaid $93.1 million under its revolving credit facility, paid $12.0 million in taxes associated with the net share settlement of equity awards and made $2.5 million of finance lease payments. The Company also made earnout payments of $3.5 million, $2.5 million and $0.9 million to the former owners of Industrial Air, Kent Island and Consolidated Mechanical, respectively, of which $3.5 million was collectively recognized as a cash outflow from financing activities. These financing cash outflows were partially offset by $100.6 million in borrowings under the Company's revolving credit facility, $5.9 million of proceeds associated with the sale of shares to satisfy employee tax withholding requirements and $0.5 million of proceeds associated with employee contributions to the ESPP.
During the six months ended June 30, 2025, the Company paid approximately $10.7 million in taxes related to the net share settlement of equity awards, $1.8 million for payments on finance leases and made a $3.0 million payment to the former owner of Industrial Air related to the First IA Earnout Period, of which $2.3 million was recognized as a cash outflow from financing activities. These cash financing outflows were partially offset by proceeds of $6.3 million associated with the sale of shares to satisfy employee tax withholding requirements and $0.4 million associated with proceeds from employee contributions to the ESPP.
The following table reflects the Company’s available funding capacity, subject to covenant restrictions, as of June 30, 2026:

(in thousands) |  |  |  |
Cash & cash equivalents(1) |  |  |  | $ | 17,529 |
Credit agreement: |  |  |  |
Wintrust Revolving Loans(2) |  | $ | 100,000 |  |  |
Outstanding borrowings on the Wintrust Revolving Loans(3) |  | (17,500) |  |  |
Outstanding letters of credit |  | (6,950) |  |  |
Net credit agreement capacity available |  |  |  | 75,550 |
Total available funding capacity |  |  |  | $ | 93,079 |

(1) The Company considers all highly liquid investments purchased with a maturity of 90 days or less on the date of purchase to be cash equivalents. Cash equivalents as of June 30, 2026 consisted of certain overnight repurchase agreements.
(2) On July 24, 2026, LFS, LHLLC, and other designated parties entered into the Third Amendment with Wintrust, as administrative agent, and the other lenders party thereto. The Third Amendment provides for, among other things, an upsize of the aggregate principal amount of the senior secured revolving credit facility from $100.0 million to $125.0 million. See Note 15 – Subsequent Events in the accompanying notes to the Company’s condensed consolidated financial statements for further information.
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(3) The Company intends to deploy free cash flow to continue to reduce its borrowings under its revolving credit facility.
Cash Flow Summary
Management continued to devote additional resources to its billing and collection efforts during the six months ended June 30, 2026. Management continues to expect that growth in our ODR business, which is less sensitive to the cash flow issues presented by large GCR projects, should positively impact our cash flow trends.
Provided that the Company’s lenders continue to provide working capital funding, the Company believes based on its current forecast that its current cash and cash equivalents of $17.5 million as of June 30, 2026, cash payments to be received from existing and new customers, and availability of borrowing under the Wintrust Revolving Loans (pursuant to which we had $75.6 million of availability as of June 30, 2026) will be sufficient to meet its working capital and capital expenditure requirements for at least the next 12 months.
Debt and Related Obligations
Long-term debt consists of the following obligations as of:

(in thousands) | June 30, 2026 |  | December 31, 2025
Wintrust Revolving Loans | 17,500 |  |  | 10,000 |
Finance leases – collateralized by vehicles, payable in monthly installments of principal, plus interest ranging from 4.50% to 8.60% through 2031 | 18,199 |  |  | 20,570 |
Financing liability | 5,351 |  |  | 5,351 |
Total debt | 41,050 |  |  | 35,921 |
Less - Current portion of long-term debt | (4,862) |  |  | (5,031) |
Less - Unamortized discount and debt issuance costs | (346) |  |  | (354) |
Long-term debt | $ | 35,842 |  |  | $ | 30,536 |

See Note 6 – Debt in the accompanying notes to the Company’s condensed consolidated financial statements for further information.
Surety Bonding
In connection with its business, the Company is occasionally required to provide various types of surety bonds that provide an additional measure of security to its customers for its performance under certain government and private sector contracts. The Company’s ability to obtain surety bonds depends upon its capitalization, working capital, past performance, management expertise and external factors, including the capacity of the overall surety market. Surety companies consider such factors in light of the amount of the Company’s backlog that it has currently bonded and their current underwriting standards, which may change from time-to-time. The bonds, if any, the Company provides typically reflect the contract value. As of June 30, 2026 and December 31, 2025, the Company had approximately $107.3 million and $156.6 million in surety bonds outstanding, respectively. The Company believes that its $1.0 billion bonding capacity provides us with a significant competitive advantage relative to many of its competitors which we believe have limited bonding capacity. See Note 13 – Commitments and Contingencies in the accompanying notes to the Company’s condensed consolidated financial statements for further information.
Insurance and Self-Insurance
The Company purchases workers’ compensation and general liability insurance under policies with per-incident deductibles of $250,000 per occurrence. Losses incurred over primary policy limits are covered by umbrella and excess policies up to specified limits with multiple excess insurers. The Company accrues for the unfunded portion of costs for both reported claims and claims incurred but not reported. The liability for unfunded reported claims and future claims is reflected on the consolidated balance sheets as current and non-current liabilities. The liability is computed by determining a reserve for each reported claim on a case-by-case basis based on the nature of the claim and historical loss experience for similar claims plus an allowance for the cost of incurred but not reported claims. The current portion of the liability is included in accrued expenses and other current liabilities on the condensed consolidated balance sheets. The non-current portion of the liability is included in other long-term liabilities on the condensed consolidated balance sheets.
The Company is self-insured related to medical and dental claims under policies with annual per-claimant and annual aggregate stop-loss limits. The Company accrues for the unfunded portion of costs for both reported claims and claims incurred but not reported. The liability for unfunded reported claims and future claims is reflected on the condensed consolidated balance sheets
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as a current liability in accrued expenses and other current liabilities. See Note 13 – Commitments and Contingencies in the accompanying notes to the Company’s condensed consolidated financial statements for further information.
Multiemployer Pension Plans
The Company participates in approximately 70 MEPPs that provide retirement benefits to certain union employees in accordance with various collective bargaining agreements (“CBAs”). As one of many participating employers in these MEPPs, the Company is responsible with the other participating employers for any plan underfunding. The Company’s contributions to a particular MEPP are established by the applicable CBAs; however, required contributions may increase based on the funded status of an MEPP and legal requirements of the Pension Protection Act of 2006 (the “PPA”), which requires substantially underfunded MEPPs to implement a funding improvement plan (“FIP”) or a rehabilitation plan (“RP”) to improve its funded status. Factors that could impact funded status of an MEPP include, without limitation, investment performance, changes in the participant demographics, decline in the number of contributing employers, changes in actuarial assumptions and the utilization of extended amortization provisions. Assets contributed to the MEPPs by the Company may be used to provide benefits to employees of other participating employers. If a participating employer stops contributing to an MEPP, the unfunded obligations of the MEPP may be borne by the remaining participating employers.
An FIP or RP requires a particular MEPP to adopt measures to correct its underfunding status. These measures may include, but are not limited to an increase in a company’s contribution rate as a signatory to the applicable CBA, or changes to the benefits paid to retirees. In addition, the PPA requires that a 5.0% surcharge be levied on employer contributions for the first year commencing shortly after the date the employer receives notice that the MEPP is in critical status and a 10.0% surcharge on each succeeding year until a CBA is in place with terms and conditions consistent with the RP.
The Company could also be obligated to make payments to MEPPs if it either ceases to have an obligation to contribute to the MEPP or significantly reduces its contributions to the MEPP because it reduces the number of employees who are covered by the relevant MEPP for various reasons, including, but not limited to, layoffs or closure of a subsidiary assuming the MEPP has unfunded vested benefits. The amount of such payments (known as a complete or partial withdrawal liability) would equal the Company’s proportionate share of the MEPPs’ unfunded vested benefits. The Company believes that certain of the MEPPs in which it participates may have unfunded vested benefits. Due to uncertainty regarding future factors that could trigger withdrawal liability, the Company is unable to determine (a) the amount and timing of any future withdrawal liability, if any, and (b) whether its participation in these MEPPs could have a material adverse impact on its financial condition, results of operations or liquidity.
Critical Accounting Policies and Estimates
Management’s Discussion and Analysis of Financial Condition and Results of Operations are based upon our condensed consolidated financial statements, which have been prepared in accordance with GAAP. The preparation of the condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements for assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, the reported amounts of revenue and expenses during the reported period, and the accompanying notes. Management believes that its most significant estimates and assumptions have been based on reasonable and supportable assumptions and the resulting estimates are reasonable for use in the preparation of the condensed consolidated financial statements. The Company’s significant estimates include estimates associated with revenue recognition on construction contracts, costs incurred through each balance sheet date, intangibles, property and equipment, fair value accounting for acquisitions, insurance reserves, income tax valuation allowances, fair value of contingent consideration arrangements and contingencies. If the underlying estimates and assumptions upon which the condensed consolidated financial statements are based change in the future, actual amounts may differ from those included in the accompanying consolidated financial statements.
Management believes there have been no significant changes during the six months ended June 30, 2026, to the items that we disclosed as our critical accounting policies and estimates in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and Note 2 – Significant Accounting Policies in the accompanying notes to the Company’s consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2025.
Recent Accounting Pronouncements
See Note 2 – Significant Accounting Policies in the accompanying notes to the Company’s condensed consolidated financial statements for a discussion of recent accounting pronouncements.
Item 3. Quantitative and Qualitative Disclosures About Market Risk
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Interest Rate Risk
The Company is exposed to market risk through changes in interest rates, primarily limited to borrowings under the Wintrust Revolving Loans in excess of the amounts covered by the Company’s interest rate swap arrangement. As of June 30, 2026, the Company had $17.5 million of direct borrowings outstanding under the Wintrust Revolving Loans. The Company is party to an interest rate swap arrangement to manage the risk associated with a portion of its variable-rate long-term debt. The interest rate swap has a $10.0 million notional value with a fixed interest rate and will mature in July 2027. The Company has not designated this instrument as a hedge for accounting purposes. As a result, the change in fair value of the derivative instrument is recognized directly in earnings on the Company's condensed consolidated statements of operations as a gain or loss on interest rate swap. Assuming outstanding balances were to remain the same and including the impact of the Company’s interest rate swap agreement, a hypothetical 100 basis point increase in interest rates on our variable-rate debt (excluding the portion hedged by the swap) as of June 30, 2026 would result in an approximate $0.1 million increase in annualized interest expense. Conversely, a 100 basis point decrease in interest rates would result in a comparable decrease in annualized interest expense. Actual results could differ from these estimates due to fluctuations in borrowing levels and other factors. See Note 6 – Debt in the accompanying notes to the Company’s condensed consolidated financial statements for further detail of the Company’s revolving credit facility and interest rate swap arrangement.
In addition, the Company considers all highly liquid investments purchased with a maturity of 90 days or less on the date of purchase to be cash equivalents. Cash and cash equivalents as of June 30, 2026 were $17.5 million. The Company maintains a disciplined cash management strategy whereby excess cash is invested in overnight repurchase agreements only when outstanding borrowings under its revolving credit facility are $10.0 million or less. When borrowings exceed this threshold, the Company generally deploys available cash to reduce outstanding revolver borrowings to approximately $10.0 million. For both the three and six months ending June 30, 2026, interest income in the aggregate was less than $0.1 million. The Company maintains a conservative investment policy and has not experienced any losses in its cash and cash equivalents. Management believes the Company is not exposed to significant risk with respect to such accounts.
Item 4. Controls and Procedures
Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures
Our management, with the participation of our President and Chief Executive Officer and Executive Vice President and Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures, as defined in Rule 13a-15(e) under the Exchange Act. Based on that evaluation as of June 30, 2026, our President and Chief Executive Officer and Executive Vice President and Chief Financial Officer concluded that our Company’s disclosure controls and procedures were effective.
Changes in Internal Control over Financial Reporting
There were no changes in our internal control over financial reporting identified in connection with the evaluation required by Rule 13a-15(d) and 15d-15(d) of the Exchange Act that occurred during the period covered by this Quarterly Report on Form 10-Q that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.
Inherent Limitations on Effectiveness of Controls
In designing and evaluating the disclosure controls and procedures, management recognizes that any controls and procedures, no matter how well designed and operated, cannot provide absolute assurance of achieving the desired control objectives. Our management recognizes that any control system, no matter how well designed and operated, is based upon certain judgments and assumptions and cannot provide absolute assurance that its objectives will be met. Similarly, an evaluation of controls cannot provide absolute assurance that misstatements due to error or fraud will not occur or that all control issues and instances of fraud, if any, have been detected.
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Part II
Item 1. Legal Proceedings
See Note 13 – Commitments and Contingencies to the condensed consolidated financial statements for information regarding legal proceedings, which information is incorporated herein by reference.
Item 1A. Risk Factors
The financial condition and results of operations of the Company may be affected by a number of factors, whether currently known or unknown, including, but not limited to, those described under “Item 1A. Risk Factors” in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025. These risks could materially and adversely affect the Company’s business, financial condition, cash flows, and results of operations. The Company may also be subject to additional risks and uncertainties that are not currently known or that, due to future developments, may become material.
Except for the risk factor disclosed in Part II, Item 1A of the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2026, which is incorporated herein by reference, there have been no material changes to the risk factors disclosed in the 2025 Annual Report.
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds
None.
Item 3. Defaults Upon Senior Securities
None.
Item 4. Mine Safety Disclosures
Not applicable.
Item 5. Other Information
Rule 10b5-1 Trading Plans
The Company’s directors and officers may from time to time enter into plans or arrangements for the purchase or sale of its common stock that are intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act. During the three months ended June 30, 2026, no director or officer of the Company adopted, modified or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408(a) of Regulation S-K.
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Item 6. Exhibits

Exhibit |  | Description
3.1 |  | Conformed Second Amended and Restated Certificate of Incorporation (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K (File No. 001-36541) filed with the U.S. Securities and Exchange Commission on June 23, 2023).
3.2 |  | Certificate of Designation of Class A Preferred Stock (incorporated by reference to Exhibit 3.2 to the Company’s Current Report on Form 8-K (File No. 001-36541) filed with the U.S. Securities and Exchange Commission on July 26, 2016).
3.3 |  | Certificate of Correction to Certificate of Designation of Class A Preferred Stock (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K (File No. 001-36541) filed with the U.S. Securities and Exchange Commission on August 24, 2016).
3.4 |  | Amended and Restated Bylaws (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K (File No. 001-36541) filed with the U.S. Securities and Exchange Commission on April 17, 2023).
31.1* |  | Certification of the Chief Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2* |  | Certification of the Chief Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1* |  | Certification of the Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2* |  | Certification of the Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS |  | XBRL Instance Document.
101.SCH |  | XBRL Taxonomy Extension Schema Document.
101.CAL |  | XBRL Taxonomy Extension Calculation Linkbase Document.
101.LAB |  | XBRL Taxonomy Extension Label Linkbase Document.
101.PRE |  | XBRL Taxonomy Extension Presentation Linkbase Document.
101.DEF |  | XBRL Taxonomy Extension Definition Document.
104 |  | Cover Page Interactive Data File (formatted as inline XBRL with applicable taxonomy extension information contained in Exhibits 101)

*Filed herewith
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SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

| LIMBACH HOLDINGS, INC.
| /s/ Michael M. McCann
| Michael M. McCann
| President and Chief Executive Officer
| (Principal Executive Officer)
| /s/ Jayme L. Brooks
| Jayme L. Brooks
| Executive Vice President and Chief Financial Officer
| (Principal Financial and Accounting Officer)
Date: August 4, 2026 |

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